Invaders of the Rokujouma!? Series

With the end of the year approaching, things are getting busy around Corona House. Even though it’s winter vacation, there’s a new play to get ready for, Koutarou has picked up a new part-time job that no one seems to know anything about, and Ruth has decided to take up martial arts training. Come January, preparations for “The Silver Princess and the Blue Knight, Part 2” kick into high gear, but when an old rival reappears dead set on revenge, Koutarou may be in for the trip of a lifetime.

Valentine’s Day is right around the corner, and the girls of room 106 are scrambling in preparation for it. It’s not all fun and games, however, because not everyone seems to be able to admit their true feelings. Ruth receives a strange message from her parents back home in Forthorthe, leaving her with an important decision to make about her future. And on top of everything else, she seems to be getting closer and closer to figuring out what happened to Koutarou while he was away.

When Theia’s Blue Knight detects a strange anomaly near Earth, it looks like Koutarou and the others have a new kind of invader on their hands. Another princess from Forthorthe has come to sabotage Theia’s trial, but no one seems to be able to find her! The threat lingers as they get involved with the drama club and agree to help put on a very special play for the upcoming cultural festival. And just how long can Yurika keep a you-know-what in room 106 a secret from Ruth?

Newly Remastered Translation! Just starting high school, Koutarou is moving out on his own to take some of the burden off of his widower father. Lucky for him, he’s found a room at Corona House. It has a great landlord, it’s not too far from school, and best of all, it’s dirt cheap. It really is perfect... except for the strange girls that keep appearing to try and take it over! But even as room 106 turns into a battlefield, Koutarou isn’t willing to give up his apartment without a good fight. The invasion begins!

Summer vacation is right around the corner, but can Koutarou and the invaders manage a ceasefire long enough to actually enjoy it? Luck seems to be on their side when Ruth wins them a trip to a seaside hot spring, but it’s not all fun and games with shadowy figures stalking their every move. When push comes to shove, can rivals become allies to save one of their own? Or is it every invader for themselves?

Thanks to an intervention from a certain someone, Koutarou and the invaders are now forced to try and work out their territorial dispute peacefully. But when playing cards gets boring, scheming Kiriha and maniacal Theia cook up a plan. Their next battle for control of room 106 will be... the obstacle marathon for clubs at the school sports festival?! But won’t the invaders all have to join clubs first? What happens when Koutarou decides there’s something more important at stake than room 106? And how does a ghost even run a marathon?

After Clan and Koutarou are caught in the premature explosion of the Super Space-time Repulsion shell, they’re blown clear across the universe to a most unexpected destination. Will they be able to put their fight aside long enough to cooperate and figure out a way to get back home? Along the way, they’ll meet some strangely familiar allies and witness the start of a legend firsthand—just not the way they ever expected it to happen.

Back from his unexpected travels, Koutarou tries to settle into his life as a normal high school student again. A school field trip to a ski resort sounds like just the right thing to do the trick. When they get there, however, Yurika notices that Maki is sneaking into the mountains to use magic. Worried that Darkness Rainbow is up to something, Yurika goes to investigate, but the investigation turns into a lot more than she bargained for when she comes across a demon.

Lately, Koutarou has been growing more and more suspicious of Kiriha. Claiming that she’s come to invade the surface is one thing, but what on earth is she doing helping the neighborhood association clean up the city? Is this all part of some nefarious plan? Or is there something else going on? When Koutarou works up the nerve to confront her about it, she responds by... asking him on a date?!

Harumi has a special favor to ask Yurika concerning Koutarou, but Yurika will have her own set of relationship problems when a new transfer student shows up at school the next day. The new girl—Aika Maki—is an acquaintance of hers, but she’s not the old cosplay friend everyone seems to think she is. If what Yurika says is true, Maki is the evil magical girl that she’s been trying to warn the others about all along. The biggest danger now may be that no one believes her.

The evil magical girls finally make their move to seize the mana pool in room 106. Shizuka and the other girls will have to go all out to protect Corona House from strange new enemies, while Koutarou crosses paths with an old foe who’s gotten a bit of an upgrade. The most intense battle yet, however, is the one going on inside Maki’s head. Her job as Dark Navy now means making a move on Koutarou, but all she wants is to protect him. Does she uphold her mission, or does she follow her heart?

Koutarou at last makes his return to Forthorthe, although it’s not in a very glorious fashion. Stranded on Planet Alaia with Theia and Yurika, he’ll have to figure out a way to use the limited resources they have to get past the imperial troops everywhere if he ever hopes to make it back to safety and the rest of their friends. Fate has a few familiar twists in store, however, as the coup d’état gets off to an ugly start and their enemies show their true colors.

After Theia receives a distressing message about her mother in Forthorthe, she’s forced to make what could be a life-changing choice. Does she rush home to be with her family in a time of need, or does she stay on Earth to complete her trial with the friends and the boy she’s come to love so dearly? Nothing is simple, however, when it comes to the politics of a galactic empire. The trouble runs deeper than it seems. Koutarou is reunited with a few old friends, one of which he’s not too happy to see.

Deciding they need a bit of a break, Koutarou takes the girls out for a day of beetle hunting. An unexpected reunion, however, leads Kiriha to realize there’s more than just beetles in the mountains outside of Kisshouharukaze City. It seems the radical faction has been working in the shadows all this time, and they’ve already established a foothold on the surface. But a factory? Magicians? Automated weapons? It sounds like they’re preparing for something big, but this is only the beginning.

Things have finally quieted down for Koutarou and the Corona House crew, meaning it’s time to kick back and have a little summer fun! Things start off at the beach where swimming, volleyball, and a test of courage are all on the menu. After that, there’s still plenty more fun to be had at a local festival and the amusement park. But when summer vacation draws to a close, Yurika’s worst nightmares come true... And what’s this about a surprise visitor at the apartment?

Koutarou and Clan are working their way back home from their interstellar adventure, but they have to make a pit stop about ten years off from their intended destination. As luck would have it, they encounter a young girl right after they land. Worried that she might have seen their spaceship in action, Koutarou decides to dig a little deeper. Things take an unexpected and heart-wrenching turn, however, when he realizes he has more in common with this girl than he initially thought.

With the civil war now in full swing, Alaia and her allies mount a resistance to try and retake their beloved country. History seems to be unfolding all according to the legend, except for one major problem. The Blue Knight is still missing. In his stead, Koutarou and Clan find themselves in the center the chaos, trying to keep history from going too far off the rails so they can eventually get back home to their own place and time. Will they be able to save Forthorthe and themselves? The 10th book in the Invaders of the Rokujouma!? series!

With things coming to a head between the radical and conservative factions, it’s time for Kiriha and the others to take a stance. After discovering a cataclysmic weapon in the hands of the radicals that stands to threaten both the surface and the underground, can they act in time to prevent tragedy? The clock is ticking, but it won’t be the only thing working against them since the radical faction has a little... outside help... on their side.

Now that the invaders have come to an understanding of sorts, things are going smoother than ever in room 106. Spring is in the air—tulips, friendships, and potential romances are all about to burst into full bloom. Koutarou and the invading girls have never been happier together, but nothing lasts forever. Things turn dark quickly when they find out that they’re going to have to say goodbye to one of their own... and soon. Without even any time to prepare, will the bonds they all share be enough to pull them through?

Volume 20 is a special collection of side stories. First up, Yurika announces that she’s quitting cosplay—or, at least, that’s the impression the cosclub gets. Next, Sanae and Ruth do a little dream diving. After that, Maki confronts Theia about some unexplained expenses she’s recording in the Satomi knights’ ledger. Then lastly, Shizuka recruits the entire Corona House crew to help out with the cook-off at the cultural festival. The girls will cook while Koutarou judges, and the results are explosive to say the least.

The Satomi band of knights is steadily expanding and all is well in room 106. At least for a little while. Yurika comes to everyone with an unusually serious request—she wants them to help her savior and mentor, the former Rainbow Nana. Children then mysteriously start going missing in Kisshouharukaze City, which can only mean one thing. The evil magical girls of Darkness Rainbow are back in town and they mean serious business this time. Deadly serious business.

In this special collection of stories, new and old friends alike appear. Shizuka tells the story of how she lost her parents. She also comes to learn of the very special power that’s been sleeping within her, and just what consequences that has for her... waistline? Yurika goes on a little quest to try and find herself, or rather, herselves. And finally, the story of how Koutarou knows Theia’s mother.

With the coup d’etat back home in Forthorthe finally reaching critical mass, Elfaria and Theia decide its time for them to return. Theia is reluctant to drag her friends into the politics of her homeland, but they’re just as stubborn as she is. They band together and set out for Forthorthe, but their enemies will make sure not even the trip there is easy. They all have a long, hard fight ahead of them—and this is just the beginning.

Yurika has made the bold decision to attack Darkness Rainbow’s base in order to try and prevent all-out war in Folsaria. It’s going to mean a bit of a field trip for everyone, and a very big battle. Koutarou and the girls will have to consolidate all of the power they have—and maybe borrow some help from a few new(?) allies—to get home safely this time. There’s a strange enemy on the horizon, but perhaps the only thing harder than fighting yourself is fighting someone you love...

With one of their own in trouble, Koutarou and the others are left reeling. Clan thinks she may have gotten to the bottom of things, but if what she says is true, the crisis they now face has been in the making for thousands of years. But the surprises are far from over there. A strange message for Koutarou could mean a tentative new alliance with a most unexpected partner. The offer comes at a time when they could desperately use the help, but what will the true cost be?

It turns out the timid, polite Harumi has a secret admiration for the way Kiriha teases Koutarou, so she does the unthinkable—she asks Kiriha to teach her how to become a bad girl too! In the next story, Clan also asks for something a little unusual. She starts martial arts training under Koutarou and Shizuka, but is she really up to the task when she can barely handle her own feelings? Next, there’s a surprise royal visitor to room 106, and Sanae, Yurika, and Maki decide it’s time for a makeover of magical proportions. Finally, it’s time for the Kisshouharukaze school field trip, complete with surprise confession!

The entire Corona House crew—plus a few new additions—is now on their way to Forthorthe. Unfortunately, their arrival won’t quite be the celebratory homecoming that Theia and Clan had imagined. While they’ve successfully returned with the Blue Knight, he’s only back in the solar system to prevent further tragedy. Ralgwin is somewhere, skulking in the shadows with terrifying new allies, and Koutarou is determined to keep the next would-be dictator from threatening the peace of the universe once again.

Now that Koutarou and company are back from their long journey to Forthorthe, everyone is hoping to settle back down into their normal, peaceful lives. Things are quickly thrown off course, however, when Theia, Ruth, and Clan show up with a little extra baggage and Koutarou suddenly finds himself in the midst of intergalactic negotiations. Has the real alien invasion just now begun? And what’s with the strange voice Sanae keeps hearing? Moreover, what’s got Clan so pensive?

Koutarou and company are left reeling in the wake of Ralgwin’s mysterious disappearance, but he isn’t the only cause for concern anymore. Maki receives an invitation from Rainbow Heart, which brings the whole group to Folsaria. All seems well at first, but intrigue and danger are brewing under the surface in the supposedly peaceful land of magic. An old enemy rears his head after ages, renewing a fight that Koutarou hopes to settle once and for all. Will he be able to claim a definitive victory this time with the girls’ help?

With Forthorthe on the verge of erupting into civil war like it hasn’t seen for thousands of years, Elfaria and the others do what they can to regain the trust of the citizens. But as it turns out, all of Forthorthe has their eyes on her, her daughter... and the mysterious knight in blue armor. Can they win the hearts of the people while trying to keep a very big secret from them? And with the vicious Vandarion plotting against them, it looks their bloodiest battle yet may be looming on the horizon.