Oniichan wa Oshimai!
Onimai: I'm Now Your Sister!
Mahiro Oyama was just a normal erotic-game loving dude...until he woke up one morning as a woman! Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him...with a disastrous outcome, as far as Mahiro's concerned! But Mihari is as determined to study him as he is determined to go back to his shut-in, game-playing life, and one thing's for sure...life is going to get a whole lot weirder from here on out!
(Source: Kodansha USA)
manga
publishing
2018
Chapters
Chapter 81
Chapter 80.5
Chapter 80
Chapter 79
Chapter 78.5
Chapter 78
Chapter 77
Chapter 76
Chapter 75
Chapter 74.5
Chapter 74
Chapter 73
Chapter 72
Chapter 71.5
Chapter 71
Chapter 70
Chapter 69
Chapter 68
Chapter 67
Chapter 66
Chapter 65
Chapter 64
Chapter 63
Chapter 62
Chapter 61
Chapter 60.5
Chapter 60
Chapter 59
Chapter 58
Chapter 57
Chapter 56
Chapter 55
Chapter 54
Chapter 53
Chapter 52
Chapter 51
Chapter 50.5
Chapter 50
Chapter 49
Chapter 48
Chapter 47
Chapter 46
Chapter 45
Chapter 44
Chapter 43
Chapter 42
Chapter 41
Chapter 40.5
Chapter 40
Chapter 39
Chapter 38
Chapter 37
Chapter 36
Chapter 35
Chapter 34.5
Chapter 34
Chapter 33.5
Chapter 33
Chapter 32.5
Chapter 32
Chapter 31
Chapter 30
Chapter 29
Chapter 28
Chapter 27
Chapter 26
Chapter 25
Chapter 24
Chapter 23
Chapter 22
Chapter 21
Chapter 20
Chapter 19
Chapter 18
Chapter 17
Chapter 16
Chapter 15
Chapter 14
Chapter 13
Chapter 12
Chapter 11
Chapter 10
Chapter 9
Chapter 8
Chapter 7
Chapter 6
Chapter 5
Chapter 4
Chapter 3
Chapter 2
Chapter 1
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