Ranked #2554
IO (Manga)


Alternative Titles

Japanese: イオ


Type: Manga
Volumes: 10
Chapters: 55
Status: Finished
Published: Apr 6, 2000 to Mar 4, 2005
Authors: Koio, Minato (Story & Art)


Score: 7.661 (scored by 1457 users)
Ranked: #25542
Popularity: #1403
Members: 3,164
Favorites: 40
1 indicates a weighted score
2 based on the top manga page.

My Info

Popular Tags

harem mystery romance supernatural


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)


Miyara, Nagisa
Miyara, Shibuki
Miyara, Mio
Nakabaru, Taiyo
Aida, Riho

Write a review | More reviewsReviews

Oct 23, 2007
IO basically starts of as a distinctive Harem, Romantic, Comedy, but as you go on you’ll discover that there is more to this manga, once the Supernatural, Mystery element surfaces.

It follows the endeavours of your average city boy (Taiyo), who visits Okinawa, only to end up meeting 3 girls. It appears that he once was acquainted with the sisters, some time in the past, yet he can't seem to recall any of it. That’s basically how it all begins and behind what would seem like a typical Rom/Com lies a fantastic story of supernatural mystery, scuba diving and ancient relics. The way in which the read more
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Aug 11, 2008
This was one of the most unique stories that I've had the privileged of witnessing in a long time. This was a cross between harem, mystery, Romance, and sport (if you consider scuba diving a sport that is).
The story starts out with a class trip down to some tropical islands where our lead protagonist meets a girl who blames him for killing her mom. One thing leads to another and the next thing he knows he's learning how to scuba dive with some long lost, and apparently forgotten friends. Now this story really has two stages to it. It read more
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User Recommendations

Both of these harem manga deal with simple island life and also have amazing artwork. ^_^
both are about scuba diving, although IO is more about mystery and supernatural while Amanchu is lighter and more fun to read
This kinda feels the same:
Guy living in house (apartment) with many girls
The girl is kinda cold to the guy but also depend on him at hard times

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Poll: IO Chapter 55 Discussion
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12-10-13, 2:16 PM
Poll: IO Chapter 52 Discussion
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Anime art that r0cks!!, Beautiful Romance, Harem Club, IO Ward, Seinen Ecchi Manga Club!, The All-Over Otaku Club Okawari

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