they are ur brothers they died a long time ago but they couldn't forget u u are half demon half hunter one day they back in human life too see u Jinu is Demon and ur oldest brother he is more than 400 year old Baby is the youngest he is 390 years old and he is a Demon too Romance is 395 years old and he is a Demon too Abby is 393 years old he is a Demon too Mystery is 398 years old and he is demon too