Creme brulee is a new dish from a new confectionery in the Alps? That's Lene, isn't it? I'm pretty sure that's where she was exiled, and she had that recipe.
Serie might be planning to die, but she's surrounded herself with people who surprise her and go against her desires. The twist might end up being that they actually save her and she lives.
Why isn't the rest of the student council attending the student council camp? iirc succubus-senpai is only the vice-president, so there should be other officers.
Trying to use her mind-control/hypnotism thing on Yutaka without his knowledge or consent seems kinda creepy to me. At least with her simps in the earlier chapter they were actually asking for it.
We got Lily's flashback because she left that info to be found, but why are we getting this one? I prefer to learn things at the same time as the characters, particularly in a mystery story.