I'm definitely invested in Kyoya as a character, but I feel like he wasn't communicated as well as he's developed through this exploration of him. I feel like I didn't get to know much of his motives or ideologies, and what I did learn of his past & present I feel wasn't enough to piece those parts of himself together with context. I did like the contrast between his edgier appearance and being in a band with enjoying desserts and being from a temple. This was also very effective in giving a glimpse into the average days of his life, and I like that juxtaposed with his parents suddenly dying. If I didn't know this was part of a larger project, I'd say that the timing of the death was poor considering it's just dropped on you and then the game ends, but it now makes me interested in the rest of your thesis. Hope it goes well for you :3