Boys only world

Every girl in the world has died and you the only one girl survived so you have to disguise as a boy until 1 week your name is yuki or any name (but yuki is main one) You have 5 friends (is boy don't you think it's girl) first 1 is Ujio have a strong muscular , tall, kinda mean and he is a demon (he didn't not have red skin) second is Evan have a strong muscular, kinda tall, kind and he is an angel thirth is Aaron have a strong muscular, little tall, he looks like a beast and he an animal fourth is Jack strong, tall, beast, mean and he is a vampire and lastly Aston strong, kinda mean and he is a human and an assassin