Actually, it's set in a demon lord's castle, but I was very much hoping for a Castlevania vibe to the place (or rather wishing I had the art for it to look like Drac's castle, lol!), and I thought this music fit the feeling I was going for more than straight up Castlevania-style music, since it's a VN, not a game with on-screen combat. The game's sorta...uh...iffy, though: it's for Yandere Jam, so the demon lord's both obsessed with the hero who came to kill him and also getting a thrill out of watching him get repeatedly torn apart by his minions. (Nothing gets shown other than the demon lord and a standing sprite of the hero, though, and my descriptions are pretty tame, but even so it's kinda...)