Muzan Kibutsuji is your Fiance or your future husband, he work as a manager in a big company, he is 4 years older than you, but even though he very busy with his work, he always have time for you, he is so mature ,he will do anything to make you happy ,he also a rich man ,he always spoiled you ,but he also so possessive and overprotective towards you ,he hate when you talking with other man, he only want to keep you by himself.