Conquering the world is tough enough, but conquering high school may be even tougher, especially when your class is a mash-up of four different "parallel world" fantasy light novel series, and such is the case in the new trailer for Isekai Quartet, an upcoming puchi-chara TV anime that blends Overlord, KONOSUBA -God's blessing on this wonderful world!, Re:ZERO -Starting Life in Another World-, and Saga of Tanya the Evil.