He has a reserved personality and a very strong sense of justice with no tolerance towards those who don't know their own limitations and throw away their lives. Despite letting Nezuko Kamado live due to Tanjiro Kamado's persistence, he shows zero hesitation when killing other demons and has no respect or mercy towards them like most Demon Slayers. Giyu has a complex with what others think of him and is shocked when Shinobu Kocho claims he is hated by many. Giyu suffers from self-doubt