The Summer Hikaru Died

The Summer Hikaru Died is a Japanese manga series written and illustrated by Mokumokuren. It was serialized on Kadokawa Shoten's Young Ace Up website from August 2021 to October 2026. As of June 2026, the series' individual chapters have been collected in nine tankōbon volumes. It follows the story of Yoshiki Tsujinaka, a teenager in rural Japan who discovers that his friend Hikaru Indou has been possessed by an otherworldly entity, forcing him to navigate their changed relationship amid supernatural dangers.

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