By Takehaya and Poco. Released in Japan as “Rokujouma no Shinryakusha!?” by Hobby Japan. Released in North America digitally by J-Novel Club. Translated by Warnis.

As the author says in the afterword, technically this could have been Volume 9.5. That said, I am happy that it kept itself in the main series, as for the most part it had a larger scope than the chapters with Koutarou and Clan back in ancient history did. This particular volume shows that, even as Koutarou adn the reader thinks that his troubles began when all the girls tried to move into his apartment on the same day, they actually have a bond that extends back a lot longer. We already know about Koutarou’s relationship with Theia and Ruth’s planet, and of course Harumi seemingly being the reincarnation of Alaia. Now we see how he was Kiriha’s knight in shining armor all along, and he also had a major role to play in the past of both Yurika and Sanae, though neither of them technically show up here. It all ties together, and not in a teeth-grinding way either.

Adult Kiriha is on the cover, but child Kii-chan is who we get for 4/5 of the book, having run away from home due to latent grief over the death of her mother. She runs into Koutarou and Clan, who are time-traveling back but have to recalibrate. Naturally, Koutarou doesn’t recognize her till halfway through the book… and even then he promptly forgets about it because of an even bigger revelation – the day they’ve arrived is the day his own mother was killed in a car accident. Now he has to choose between saving his mother or protecting the future he’s fought for with everyone. There are, of course, a few problems. Kii-chan is a target for assassination. The assassin is actually a dark magical girl. Which means that Nana, Yurika’s predecessor and mentor, is also trying to stop her… as in a young woman who is an archer, desperately trying to save her daughter, whose spiritual energy is being bled out to power EVIL RITUALS. There’s a lot going on.

I’ll be honest, I was expecting the “save mom or save the timeline” decision to be less of an issue than it ended up being, but I probably shouldn’t have been. Each of the characters has shown themselves to be deeply lonely in a way they can only fix by being around each other, and therefore it should be no surprise that Koutarou’s first reaction is “forget about the timeline, I have to do this”. You can likely guess what the outcome is, but on the bright side, we get another cool battle that shows off Koutarou’s ridiculous endurance even as it shows us that he’s getting less pwoerful the longer he’s away from the others. Probably the best scene in the book is the final one, back in the present, as Kiriha has realized who her “oniichan” really is and is, unsurprisingly, ecstatic. The author really excels at drawing deeply emotional, sappy scenes without making the reader roll their eyes or feel uncomfortable.

Shizuka may have gotten the last cover, but she wasn’t in this one (though her ridiculous strength was mentioned). It seems unlikely she’ll be in the next one either, as we get another cliffhanger that tells us that next time around is Sanae-focused. If you’ve been reading Rokujouma from J-Novel Club, and you enjoy supporting the author by actually buying it (please support the author!), you’ll definitely enjoy this new volume.