Playback is currently unavailable for S1 E1 · Replacement. Episode details remain available below.
The Summer Hikaru Died
Six months ago, Hikaru vanished for a week. Now, as his best friend Yoshiki senses something amiss and confronts him, the harrowing truth emerges.
- Cast:
- Chiaki Kobayashi, Shuichiro Umeda, Chikahiro Kobayashi, Wakana Kowaka
- Language:
- Japanese
- Country:
- Japan
- Network:
- Nippon TV
Episode guide
Seasons
Season 1
Episodes
E01
Episode 1
★ 8.2Replacement
2025-07-06 · 24mYoshiki confronts Hikaru about his suspicions and discovers the terrifying truth. Even though they try to live normally, eerie incidents begin to occur.
Current episode
E02
Episode 2
★ 7.6Suspicion
2025-07-13 · 24mWhile Yoshiki and Hikaru accompany their classmates to a creepy mountain trail, a mysterious man arrives at Kubitachi Village and begins investigating.
Watch progress · Not tracked
E03
Episode 3
★ 7.8Denial
2025-07-20 · 24mRecalling childhood memories with Hikaru, Yoshiki continues to struggle with his complex emotions. Desperate, he reaches out to Kurebayashi.
Watch progress · Not tracked
E04
Episode 4
★ 7.7Summer Festival
2025-07-27 · 24mAs Yoshiki attends the summer festival with Hikaru, the village elders fret over the recent death and Tanaka ends up with more questions than answers.
Watch progress · Not tracked
E05
Episode 5
★ 6.8Wig Ghost
2025-08-03 · 24mWhen Yoshiki's sister spots a creepy clump of hair in the bathroom, Hikaru visits the Tsujinaka home to investigate — but things take a deadly turn.
Watch progress · Not tracked
E06
Episode 6
★ 6.5Asako
2025-08-10 · 24mYoshiki and his classmates discuss a story their teacher assigned them. Later, at a sleepover, Asako's sharp observations put her in grave danger.
Watch progress · Not tracked
E07
Episode 7
★ 8.2Determination
2025-08-17 · 24mAfter the sobering realization that Hikaru is truly dangerous, Yoshiki decides that he must act and invites his best friend to skip school together.
Watch progress · Not tracked
E08
Episode 8
★ 7.3Contact
2025-08-24 · 24mYoshiki and Hikaru investigate Nonuki-sama and its link to Kubitachi's history. While at the library, they get an important lead from a surprising source.
Watch progress · Not tracked
E09
Episode 9
★ 7.8Old Man Takeda
2025-09-07 · 24mKurebayashi shares her knowledge about impurities with the boys. Later, the elder Takeda loses his temper over Hikaru's ignorance of the Indo's history.
Watch progress · Not tracked
E10
Episode 10
★ 6.7Truth
2025-09-14 · 24mThe boys' surprise encounter with Tanaka lands them in the hospital. When they return to school, Yoshiki pieces together the truth behind Nonuki-sama.
Watch progress · Not tracked
E11
Episode 11
★ 7.0Indo's Sin
2025-09-21 · 24mThough hesitant, Yoshiki asks his father about the Indo family's murky past and secret ritual. Later, Hikaru loses control at school and feels deeply shaken.
Watch progress · Not tracked
E12
Episode 12
★ 6.5Its Place
2025-09-28 · 24mWhile everyone else attends the school assembly, Asako finds Hikaru wandering the halls. Alone at the beach, Hikaru reveals his final plans to Yoshiki.
Watch progress · Not trackedCast
Chiaki Kobayashi
Yoshiki Tsujinaka (voice)
Shuichiro Umeda
Hikaru Indo (voice)
Chikahiro Kobayashi
Tanaka (voice)
Wakana Kowaka
Rie Kurebayashi (voice)
Yumiri Hanamori
Asako Yamagishi (voice)
Yoshiki Nakajima
Yuta Maki (voice)
Shion Wakayama
Yuki Tadokoro (voice)