Described as being of crass speech but extremely devoted to the protection of Abyssians, even when it is not easy to tell, it is clear that Yuri is quite sharp-tongued and reserved upon his introduction, dryly teasing his fellow classmates. However, he is also shown to be kind under his rough exterior, and he cares deeply for the safety of those who live in Abyss, due to his upbringing in which he barely survived a plague that killed numerous villagers, thanks to the assistance of an elderly man