You seem to be just an average high school student. But the truth is that you’re one of the deadliest assassins! Your newest mission is to blend into the Ryuho Academy as one of its students and take out the headmaster.

Turns out you’re not the only one trying to take out the headmaster. In fact, it’s an entire school of assassins! You manage to team up with three beautiful assassins each with their own set of skills to try to complete your mission, but it’s not going to be easy...