Finished
“Taiyo rediscovers forgotten childhood with three Okinawan sisters while learning diving and facing a mystical white whale.”
IO
イオ
7.31
5,080 rank · 6,666 readers · 59 favorites
Seinen
Harem
Drama
Mystery
Romance
Supernatural
Ecchi
Would You Love or Hate This?
AI-powered analysis tailored to your taste
Based on your preference for character-driven stories with layered emotional arcs, this title's exploration of identity and belonging would deeply resonate. The pacing mirrors series you've rated highly, and its thematic depth aligns with your appreciation for nuanced storytelling...
However, the slow initial episodes might test your patience given your history of dropping shows that don't hook you early. The art style shift in the middle arc could also be a concern...
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Synopsis
Taiyo rediscovers forgotten childhood with three Okinawan sisters while learning diving and facing a mystical white whale.
Taiyo Nakabiru went to Okinawa on a trip in pursuit of beautiful girls and his wish to go diving. When trying to hit upon a girl, she surprises him by saying that he killed her mother. It appears that she and her two sisters know him, even though he does not remember ever going to Okinawa before. After convincing the three sisters, Nagisa, Shibuki and Mio Miyara, to let him help them out with their work and to let him learn diving from them, Taiyo's childhood with the sisters slowly comes back to him, and certain strange events involving a mystical white whale begins to haunt them. (Source: ANN)
What people say
Community consensus
Derived from 5 sampled reviews
8.0
/10
What 5 readers settled on.
100%
recommend
Score distribution
median 8
mode 8
σ 1.10
Agreement
Strong agreement
σ 1.10 · scores cluster tight
The polarity gap
—
Not enough recommend signal yet
Score over time
↓ 1.00
Running avg · Oct 2007 → Jul 2025
Snap verdicts
· shortest highly-rated reviews
- 8 “This manga features outstanding character designs and breathtaking underwater scenery that immediately draws you into the story. However, the narrative suffers from inconsistent pacing, an...”
- 8 “This manga offers a uniquely compelling experience with its highly accurate portrayal of scuba diving and a cast of characters that truly stick with you. While the narrative can occasionally feel...”
- 9 “IO is a fantastic experience that blends a believable romance with a compelling supernatural mystery, supported by well-defined characters and nearly flawless artwork, particularly regarding the...”
Verbosity
Short · 0%
Medium · 60%
Long · 40%
Read Order & Related
A self-contained story.
No sequels, spin-offs or alternate tellings — IO begins and ends here.
Cast
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A Manga Publication
- Format 55 × 10 ch × vol
- Total read 7h 20m approx
- Published Aug 1999 – Oct 2004
- Source Manga media type
- Ref. BS-M0804 catalog