The Dimwits and Assassins of the Old Republic

Mario and Tatsumi, along with two of their close friends, had somehow found themselves in the Knights of the Old Republic Games. Mario and his two friends have ended up in the first game while Tatsumi and his two friends have ended up in the sequel. With them being stuck, they're forced to aid the Old Republic in their fight against the Sith while finding a way to get out of it.