I will protect my spectator lifestyle with all my might because a transfer student is about to destroy it.

I was watching the perfect school caste system created by the queen, but those days of watching from the sidelines were destroyed by the transfer student. This is a story about the battle of wits between the protagonist, who wants to graduate peacefully and without incident no matter what, and the transfer student, who desperately wants to involve the protagonist in her plan to destroy the caste system. The queen, who sits at the top of the caste hierarchy, barely appears.