A chilling adaptation of Mokumokuren’s acclaimed manga, The Summer Hikaru Died, is finally arriving on Netflix, and we advise you to prepare yourselves for it. As an award-winning author, Mokumokuren has garnered critical acclaim since the manga’s release in 2021. Recently, the streaming giant teased a trailer for the upcoming series.
The Summer Hikaru Died, directed by Ryohei Takeshita and produced by CygamesPictures, is shaping up to be one of the biggest titles of 2025, particularly for manga enthusiasts. Although details about the upcoming series are currently limited, its potential is undeniable.
What is the Plot of The Summer Hikaru Died?
The Summer Hikaru Died blends coming-of-age with horror as the premise revolves around two best friends – Yoshiki and Hikaru. These two characters have grown up together and have been inseparable for all their lives until one summer which changes everything.
Hikaru returns home one day, and Yoshiki realizes that he isn’t the same anymore. What happened to Hikaru that summer? Catch a glimpse of the eeriness in the teaser trailer of the manga adaptation!
The Cast of The Summer Hikaru Died
The Summer Hikaru Died focuses on two characters – Yoshiki Tsujinaka and Hikaru Indou. Yoshiki is being voiced by Chiaki Kobayashi, whose work you might recognize from titles like Mashle: Magic and Muscles, Frieren: Beyond Journey’s End, Blue Box, A Condition Called Love, Hell’s Paradise, and The Blue Wolves of Mibu.

As for Hikaru, this character will be voiced by none other than Shuichiro Umeda, who is best known for his work in How to Become Ordinary, Senpai is an Otokonoko, Shikimori’s Not Just a Cutie, Loner Life in Another World, and Too Many Losing Heroines! among other titles.
When and Where Can You Watch The Summer Hikaru Died?
As of now, there’s no release date or release window for The Summer Hikaru Died, but Netflix has confirmed it is “coming soon.” It would be ideal for the streaming platform to release the manga adaptation in the summer of 2025, but more details will be revealed soon.
"Can I ask you something strange?"
— Netflix (@netflix) November 27, 2024
The Summer Hikaru Died is coming soon to Netflix. pic.twitter.com/2odMqtzQ6j
Until then, those who haven’t read the manga series and are curious about the same can now do so on YenPress.

Conclusion
The Summer Hikaru Died is poised to be a treat for manga fans, and for those who love a good horror. A glimpse at the teaser trailer confirms its potential. Stay tuned for more updates on this upcoming project, and be sure to check out our review upon its release.