• Book Name: Haikyuu!! - Muteki Rhythm (Doujinshi) Manga
• Alternative(s): Invincible Rhythm
• Genre(s): Doujinshi Oneshot Shounen Ai
• Author(s): Bubunhanten (Circle) & Kazuki Rai
• Status: Completed Download Manga
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Summary: Hinata asks Kageyama to help him calm his nerves by letting Hinata listen to the sound of Kageyama’s heartbeat. However, this soon escalates into more and more intimate contact, until Kageyama is certain that if he doesn’t stop this right away, Hinata is going to realize that his feelings have escalated beyond that of teammates.