ちゃんと吸えない吸血鬼ちゃん (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: Classmate Tsukina Ishikawa is a vampire. Cool and mysterious, she is the most popular girl in the class! But she's actually really bad at sucking blood! The class mobster, Otori-kun, is the only vampire in the class. By chance, Otori-kun, the class mobster, becomes her practice partner. a vampire, is his practice partner...!

(Translator: DeepL)