Prince of Cats
Taking down dictators and assassinating crime lord, now that's the easy part. Junior High, now that's the hard part. No one knows this better then Ryoma Erchizen. Being an assassin and an unwilling tennis prodigy isn't something that Ryoma does easily. The fact that his boss is a sadistic bastard doesn't really help.
Now Ryoma is assigned to Tokyo. Not that he minds...until he finds out where he'll be going to school at. Seishun Academy. To top it off, a certain someone, from Ryoma's dark past, decides to appear in his life again.