亜人ちゃんは語りたい [Demi-chan wa Kataritai]

From 2015 to 2023, Petos crafted a warm, thoughtful high school comedy for Kodansha where a biology teacher studies the everyday lives of "demi-humans"—mythical beings like vampires, dullahans, and snow women—who quietly coexist with humanity. Over its 11-issue run, the series gently explores identity, friendship, and the small wonders of being different, earning a devoted readership for its lighthearted yet sincere approach to social allegory. It stands as a standout slice-of-life manga that treats its supernatural cast with empathy and humor, making the extraordinary feel beautifully ordinary.