Sabark's Greatest Plan! We Won't Finish our Summer Homework!!

Synopsis

Summer break has begun and school is closed everywhere. Taking advantage, Cobraja is plotting a major operation with the Desert Apostles. Knowing nothing of this, Tsubomi and Itsuki visit Erika's house. Erika has been lazing through summer break every single day. Before she knows it, the new term is almost here. And she still has tons of summer homework left.