The school I transferred to was apparently once a famous elite school. Now it's a den of delinquents with poor discipline, an easy-to-get-into low-rank school where you just need to write your name to get in. Unable to stand by and watch any longer, the teachers came up with a method to rebuild the school from scratch. An eye for an eye, a tooth for a tooth, chaos for chaos—so they decided to introduce an all-you-can-insert scheme for a fixed price! Could it be that?! A system where you can insert any girl in the school as much as you want if you just pay the student council a monthly fee?
