Oaiko. 
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Description
High school student Kiyoharu has a cute girlfriend and is at the top of the caste system.
However, he feels suffocated by the fact that he has to hide himself and suppress his true feelings.
Then he becomes friends with Mizuki, a member of the library board, through “sharing a secret".
With Mizuki, he is able to reveal his true self, and the two become closer and closer.
Gradually, he begins to prioritize his time with Mizuki over his girlfriend...?
Type
Manga
Related Series
N/A
Associated Names
Fifty-Fifty
オアイコ。
Groups Scanlating
N/A
Latest Release(s)
N/A
Status in Country of Origin
1 Volume (Complete)
Completely Scanlated?
Yes
Anime Start/End Chapter
N/A
User Reviews
N/A
Forum
0 topics, 0 posts
Click here to view the forumUser Rating
Average: 7.7 / 10.0 (15 votes)
Bayesian Average: 6.74 / 10.0
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Last Updated
October 6th, 2025 7:26pm PDT - 4 weeks ago
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Genre
Categories
Category Recommendations
Recommendations
N/A
Author(s)
Artist(s)
Year
Original Publisher
Serialized In (magazine)
Licensed (in English)
No
English Publisher
N/A
Activity Stats (vs. other series)
Weekly Pos #843 
(+32)
(+32)Monthly Pos #2043 (No change)
3 Month Pos #3862
6 Month Pos #5653
Year Pos #7764 
(-146)
(-146)List Stats
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