The Magic in this Other World is Too Far Behind! (Manga) Volume 10 oleh Gamei Hitsuji

Suimei and company’s showdown with the imperial princess comes to an unexpectedly...
diplomatic... conclusion, marking the end to the mysterious coma incidents in the capital. Suimei
has his suspicions, but he doesn’t have long to dwell on them. Between trying to find a way
home and trying to survive a threat from within, he’s busier than ever. And that’s all before a
whole host of new evil rears its ugly head in the capital. Just how much longer is Suimei going to
be able to keep playing dumb about his true power?