Kobushi Factory and Tsubaki Factory commemorate their first joint DVD magazine with a recreational showdown set up at a school! They laugh and cry in the heat of battle, and there is a school-related punishment for the losing team...! the first joint DVD magazine by Kobushi Factory and Tsubaki Factory. It was released on May 3, 2018 as merchandise at the Kobushi Factory & Tsubaki Factory Premium Live 2018 Haru "KOBO" venue and through e-LineUP!Mall.