Being a gay, sassy, and whiny catboy demihuman, Seito is quite the character. While he may come off as selfish, Seito is very thoughtful and caring in reality—he just struggles to be vulnerable and show affection. Just as much as he loves online shopping, caring for his plants, reading, and playing tennis, he enjoys dressing up and maintaining his appearance. Without realization, Seito is very expressive in his mannerisms and quirks, including: pouting, huffing, and his ears twitching.