Tonight I want to talk about Chinatsu's hair. Chinatsu's hair is back-length, dirty blonde (it's not quite brown, but it also isn't quite blonde- I think this is the right term?), worn in a pigtail style, where her hair is parted to be in front of both her sides. Her hair is tied with simple red hairbands, and she wears a black ribbon near the top of her forehead, helping establish herself as part of Gehenna even without any obvious physical features, like wings, tail or horns. Chinatsu's hair is relatively simple in how it's cared for, likely because there isn't much time as a prefect to go to great lengths for perfect hair, doubly so in Chinatsu's case since she has the job of being the prefect's field doctor. Her simple design is very girls and cute, which also makes sense given her apparent soft spot for animals as described in her profile. That's probably also why capybaras seem to show up in her Onsen alt, though it's an odd way to include that side of her...
Speaking of her Onsen alt, her sprite has her wearing the same black ribboned hairband as in her base alt, but she ties her hair up a lot looser, seeming to be closer to how her hair normally falls. Her hair in general seems a lot more loose in this alt, possibly because of showing her enjoying a hot bath and sweating in it, or perhaps it's a clever way to indirectly imply her muscles are also loose. Her memolobby has the black hairband absent, along with most of her clothes, but instead she wears a simple black hairband similar to what she wears for her pigtails in her base alt. It's an interesting choice of attire, but this does show that her hair is likely looser due to her sweating and generally enjoying the onsen. Also, the artist for this put a lot of detail into her hair, you can see her individual roots.
Chinatsu definitely has a calming smell to her hair. Lavender is the obvious pick, but Camomile seems to fit her personality better. Her chibi CG art gives her a really huge forehead, even for chibi artstyle.