Summer Time Rendering

サマータイムレンダ (Summertime Render)

8.5(295,314)

MAL Score

Ranked #191

Popularity #355

Mystery
Supernatural
Suspense
Time Travel

Episodes: 25
Duration: 23 min per ep
Aired: Apr 15, 2022 to Sep 30, 2022
Status: Finished Airing

Synopsis

After losing his parents, Shinpei Ajiro was taken in by the Kofune family and grew up alongside their daughters, Mio and Ushio. Years later, he returns from Tokyo to their island home for Ushio’s funeral after she dies in a drowning incident while trying to save a little girl. What should be a simple tragedy turns unsettling when Shinpei’s closest friend mentions bruises found on Ushio’s neck, raising the possibility that her death wasn’t an accident.

As Shinpei starts retracing what happened, the island grows increasingly uneasy—people vanish, and events defy explanation. Mio is reminded of a local legend about “Shadows,” beings said to bring death to anyone who encounters their double. With Hitogashima’s hidden menace closing in, Shinpei fights against an encroaching fate, determined to carry out Ushio’s last wish: protecting Mio.

Otaku Consensus

Summer Time Rendering earns its 8.46 MAL score by treating time travel as a pressure-cooker mystery engine rather than a gimmick, with Ayumu Watanabe’s direction and Hiroshi Seko’s series composition keeping its 25-episode run unusually tight for a two-cour supernatural thriller. Critics and fans consistently single out its escalating puzzle-box structure, coastal atmosphere, and adaptation momentum as the reasons it stood out in 2022. Its most common criticism is tonal friction: bursts of fanservice, nudity, and abrupt mood shifts can briefly undercut the dread.

Why You Should Watch

Watch Summer Time Rendering if you want the looping desperation of Re:Zero filtered through a locked-room island mystery, without needing a sprawling fantasy setting or a slow-burn cour of setup. It scratches the same analytical itch as Sakurada Reset, but with more physical danger, denser cliffhangers, and a rural-coastal setting that turns local folklore into tactical suspense. The appeal is not just “time travel,” but how quickly the series forces viewers to track rules, suspect patterns, and revise assumptions. If you like supernatural thrillers where every episode changes the information economy, and where an ensemble cast matters to the mechanics rather than merely filling the background, this is one of the cleaner modern shounen mystery adaptations.

Key Characters

S
Shinpei Ajiro(VA: Natsuki Hanae)
Shinpei stands out because the story treats him less like a destined hero and more like a pressured analyst whose value comes from observation, memory, and the willingness to test awful possibilities.
U
Ushio Kofune(VA: Anna Nagase)
Ushio is the emotional and structural anchor fans remember: her presence drives the series’ urgency while complicating the boundary between grief, folklore, and strategy.

What Makes It Stand Out

1
The anime runs for 25 episodes from April 15 to September 30, 2022, giving it a complete two-cour shape rather than ending as a partial teaser for the manga. That structure is central to its reputation because the mystery can accelerate, reframe itself, and still reach a finished-airing endpoint.
2
OLM’s production leans into the contrast between bright coastal normalcy and supernatural threat, matching AniList’s high Coastal and Rural tags instead of using the island merely as scenery. The setting functions as a social map, with limited routes, familiar faces, and local beliefs making the suspense feel contained.
3
Hiroshi Seko handled series composition, a key credit for a story that depends on information control, recurring events, and rule-based escalation. The adaptation’s strongest craft is how it keeps viewers oriented while repeatedly changing what earlier scenes mean.
4
The series mixes Urban Fantasy, Supernatural, Mystery, and Suspense while also carrying unusually specific AniList tag signals such as Religion, Guns, Denpa, and Unrequited Love. That combination helps explain why it feels broader than a standard time-loop thriller without abandoning genre discipline.
5
Its international reception was delayed by distribution: IGN noted that many viewers outside select countries could not legally stream it until well after the Japanese broadcast, with availability through Hulu in the U.S. and Disney+ elsewhere. That late access contributed to its word-of-mouth profile as a 2022 standout that many Western fans discovered after the season had already passed.

Fun Facts & Trivia

Fun fact 1: Summer Time Rendering is adapted from Yasuki Tanaka’s manga, with Shuuhei Hosono, Tatsuhiko Katayama, and Yuuta Momiyama credited for original work assistance in the anime staff list.
Fun fact 2: Ayumu Watanabe directed the adaptation, with Satoshi Nakano as assistant director; the production also credits Miki Matsumoto for character design, Hiroaki Karasu for sub character design, and Kazumi Satou for prop design.
Fun fact 3: The show’s database performance is unusually strong for a suspense anime: MAL lists it at 8.46 from 295,314 votes, with a rank of #191 and popularity rank of #355 in the provided data.
Fun fact 4: AniList’s numbers reinforce its dedicated fanbase, listing an 83/100 score and 9,480 favourites, alongside high-percentage tags for Primarily Teen Cast, Urban Fantasy, Coastal, Super Power, and Rural.
Fun fact 5: The main Japanese cast pairs Natsuki Hanae as Shinpei Ajiro with Anna Nagase as Ushio Kofune, giving the series one widely recognized modern lead voice and one breakout central performance.