One night, our main character sneaks into the room of his sleeping little sister Yui for a bit of fun...once you stray from the path, there's no going back. This is an incestual story that unfolds in a love nest. Their love story is one which cannot be forgiven by anyone. [From DLsite English]
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Mai Sex 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.
| Name | Score | Importance | Weight |
|---|---|---|---|
| Forbidden Love | 3.00 | 2.23 | 6.70 |
| Non Looping BGM | 2.00 | 3.19 | 6.38 |
| Domicile | 3.00 | 2.04 | 6.12 |
| Brother/Sister Romance | 3.00 | 1.91 | 5.74 |
| Protagonist's Full Sister as a Heroine | 3.00 | 1.91 | 5.73 |
| Protagonist's Younger Sister as a Heroine | 3.00 | 1.89 | 5.67 |
| Middle School Student Heroine | 2.00 | 2.36 | 4.71 |
| Blood-related Brother/Sister Incest | 3.00 | 1.48 | 4.44 |
| Passage of Time | 2.00 | 2.16 | 4.31 |
| Siscon Protagonist | 2.00 | 2.04 | 4.09 |
| Sex with Sleepers | 2.00 | 1.91 | 3.82 |
| Brocon Heroine | 2.00 | 1.61 | 3.21 |
| Only Blood-related Heroines | 1.50 | 2.10 | 3.15 |
| Only a Single Heroine | 3.00 | 1.03 | 3.10 |
| Only Protagonist's Sisters as Heroine(s) | 1.50 | 2.00 | 3.00 |
| Only Younger Heroines | 1.50 | 1.93 | 2.90 |
| Under the Same Roof | 2.00 | 1.27 | 2.53 |
| High School Student Protagonist | 2.00 | 1.21 | 2.42 |
| Voyeurism | 1.00 | 1.62 | 1.62 |
| Nukige | 2.50 | 0.64 | 1.61 |
| Protagonist with a Face | 2.00 | 0.65 | 1.31 |
| Protagonist with a Sprite | 1.00 | 1.15 | 1.15 |
| Male Protagonist | 2.00 | 0.30 | 0.60 |
| ADV | 2.00 | 0.14 | 0.29 |
| Name | Characters | Importance | Weight |
|---|---|---|---|
| Sleep Sex Engages in (Sexual) | 1 | 2.78 | 1.93 |
| Sleep Sex Subject of (Sexual) | 1 | 2.50 | 1.73 |
| Sister Complex Personality | 1 | 2.38 | 1.65 |
| Incest Engages in (Sexual) | 2 | 1.47 | 1.62 |
| Middle School Student Role | 1 | 2.28 | 1.58 |
| No Name Role | 1 | 2.17 | 1.50 |
| Third Person Personality | 1 | 2.11 | 1.46 |
| Brother Complex Personality | 1 | 2.06 | 1.43 |
| Voyeurism Subject of | 1 | 1.99 | 1.38 |
| Full Brother Role | 1 | 1.95 | 1.35 |
| Boyfriend Role | 1 | 1.87 | 1.30 |
| Boku Personality | 1 | 1.79 | 1.24 |
| Cheerful Personality | 1 | 1.78 | 1.23 |
| Reserved Personality | 1 | 1.73 | 1.20 |
| Older Brother Role | 1 | 1.72 | 1.19 |
| Relaxed Personality | 1 | 1.64 | 1.14 |
| Full Sister Role | 1 | 1.57 | 1.09 |
| Medium Breasts Body | 1 | 1.55 | 1.07 |
| Girlfriend Role | 1 | 1.55 | 1.07 |
| Energetic Personality | 1 | 1.52 | 1.06 |
| Orange Hair | 1 | 1.51 | 1.05 |
| Smart Personality | 1 | 1.47 | 1.02 |
| Younger Sister Role | 1 | 1.44 | 1.00 |
| Green Eyes | 1 | 1.01 | 0.70 |
| Teen Body | 2 | 0.61 | 0.67 |
| Short Hair | 2 | 0.61 | 0.67 |
| Straight Hair | 1 | 0.96 | 0.66 |
| Slim Body | 2 | 0.57 | 0.63 |
| Brown Eyes | 1 | 0.90 | 0.62 |
| Virgin Sex Engages in (Sexual) | 1 | 0.84 | 0.59 |
| High School Student Role | 1 | 0.84 | 0.58 |
| Brown Hair | 1 | 0.68 | 0.47 |
| Pale Body | 2 | 0.37 | 0.41 |