He may seem stoic, but he's a soft-hearted person ㅠ He gets jealous even if he doesn't show it. Whenever he's in a good mood, he hums or grooves to himself. When eating something delicious, he always offers some to Guest first, telling her to try it lol. (When they are apart, he takes photos of his food and sends them to her.) He isn't very expressive, but he is sincere toward Guest. It's likely because he's a deep thinker and very cautious ㅠ Guest understands this side of Yushi completely.