Principal Kuma Kocho has sent the IChu on a summer vacation as a present. Each of them set out to make the most of their vacation on a private beach reserved just for them, but Mutsuki seems unhappy somehow. Then, one by one, people start going missing... The IChu that are left find a mansion deep in the forest and head inside to search for their friends.
will remain forever unfinished 
due to the author's death!
!ستبقى غير منتهية إلى الأبد بسبب موت المؤلف
bleibt für immer unbeendet,
weil der Autor verstorben ist!
vai ficar inacabada para
sempre por morte do autor!
не закончится из-за гибели автора!