Toaru Majutsu no Heavy Zashiki Warashi ga Kantan na Satsujinhi no Konkatsu Jijou

Kamachi Kazuma 10th Anniversary! A large gathering of Kamachi's characters are set to make a novel appearance! Moreover, the adaptation of the story will be in Gangan Comics starting on the same month!! One day, Kamijou Touma awakes to find a strange space in his room. There is also the mystery of the huge weapons called "Object" that has been fighting with a flying dragon, a shotacon fantasy Onee-san giving her aid, wandering together with Mikoto who is wearing bikini armor…. A large gathering of popular characters and heroines assemble from Kamachi's works to form a special novel!