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Summary

While their parents are out of town for a few days, best friends Takamichi and Kousuke agree to swap their younger sisters. It starts out as a joke, but surprisingly, both sisters agree to the plan, and the trade becomes a reality. Takamichi's outgoing and popular sister Akari secretly has feelings for her brother, but she tends to tends to act in the opposite direction of her feelings. She leaves home to go live with Kousuke. Meanwhile, Kousuke's shy and awkward sister Ayane temporarily moves in with Takamichi. While she is usually very reserved, she boldly crawls into his bed at night. "If I don't do this, I won't be able to sleep." This new situation gives rise to many new feelings. What kind of ending awaits?

Imouto Koukan! has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
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Imouto Koukan! has not yet been read by enough users to calculate it's similar novels... sorry!
A novel needs atleast 20 votes before it's similarity is calculated.

Imouto Koukan! has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
A novel needs atleast 20 owners before it's similarity is calculated.

Tags (25 total)

NameScoreImportanceWeight
Swinging2.502.576.42
Discreet Phone Sex2.002.014.02
Tribadism on Penis2.001.873.74
Non-blood-related Brother/Sister Incest2.001.773.53
Imouto-type Heroine2.001.753.50
Brocon Heroine2.001.613.22
Netorare2.001.513.02
Blood-related Brother/Sister Incest2.001.492.98
Bad Ending(s)2.001.192.39
Loli Heroine2.001.192.38
Vibrators2.001.152.31
Quickie Fix Position2.001.122.23
Heroine with Glasses2.001.112.22
Bondage2.001.112.22
Standing Sex2.001.062.11
Sitting Sex2.001.062.11
High Sexual Content2.001.052.11
Outdoor Sex2.001.001.99
Missionary Position2.000.941.88
Doggy Style2.000.811.61
Multiple Endings2.000.671.34
Nukige2.000.651.30
Sexual Content2.000.631.26
Male Protagonist2.000.300.60
ADV2.000.140.29

Traits (30 total)

NameCharactersImportanceWeight
Seventh Grader Role23.373.70
Older Brother Role21.731.90
School Swimming Club Member Role12.441.69
Younger Sister Role21.451.59
Visible Nipples Body12.161.50
Brother Complex Personality12.061.43
Glasses Clothes21.081.19
Shy Personality11.621.12
Full Sister Role11.561.08
Incest Engages in (Sexual)11.471.02
Headband Clothes11.451.01
Hairpin Clothes11.400.97
Pink Hair11.330.92
Friend Role11.200.83
Violet Hair11.200.83
Group Sex of One Male and Several Females Engages in (Sexual)11.170.81
Ponytail Hair11.100.76
Boobjob Engages in (Sexual)11.070.74
Violet Eyes11.050.73
Thigh-high Stockings Clothes11.040.72
Green Eyes11.020.71
Teen Body20.620.68
Doggy Style Subject of (Sexual)10.920.64
Slim Body20.580.63
Waist Length+ Hair10.810.56
Black Hair10.810.56
Blowjob Engages in (Sexual)10.760.53
Long Hair10.750.52
Short Hair10.610.42
Pale Body20.370.40