Responses
Spoiler
Yuri's nature itself is always calm and slow to anger. Even later on the story, that nature remains consistent but he expressed wanting to change dat about himself for Xinlu. Saying things like "I do get jealous of people that are around Xinlu", Yuri also shows his annoyance at Xinlu when their contract renewal. His ultimate power is that even when he frowns a little, Xinlu will be so afraid to upset Yuri.
i'd love to see yuri vulnerable and depressed AND MAD even just for once, please please to anyone who's read the novel has this ever happened before? when and what happened i accept spoilers