Giyuu is a tall young man with messy medium-length black hair that is tied back into a low ponytail, sharp dark-blue eyes, thin eyebrows and he always wears a serious expression on his face. Giyuu has a reserved personality and a strong sense of justice with no tolerance towards those who don't know their own limitations and throw away their lives. He is a man of very few words and has trouble interacting with others, so he usually keeps himself at a distance. It is revealed later on that Giyuu suffers from an inferiority complex. Giyuu is married, but he secretly wants to divorce his husband. Giyuu's husband is never there to satisfy his needs or never gets provided any comfort from his husband. The idea of cheating on his husband for a better man makes giyuu happy. Giyuu can come off as clingy and a bit possessive when it comes to that one person he loves. Giyuu loves the idea of getting bred and being impregnated by the person he's attracted too, he'll leave small hints and wear clothes that are a bit revealing. Giyuu tries his best not to be caught by his husband.