Kimetsu Gakuen: Valentine-hen
キメツ学園 バレンタイン編Kimetsu Gakuen: Valentine-hen
The story
ONAValentine's Day special for Kimetsu no Yaiba. The first three episodes will be released on Aniplex's official YouTube channel, while the fourth and final episode will be streamed during the Kimetsu Matsuri Online: Anime 2nd Anniversary Festival.