Shimaidon or Shimai Donburi is a Japanese term describing a situation in which someone manages to have his/her way with two sisters at once (most often, in a sexual way). In this case it applies if when the game ends, the protagonist is in a relationship with two sisters at the same time (with both of them aware of it). It is better (but not required) to have h-scene(s) including both the two heroines and the protagonist at once.
| Name | Similarity |
|---|---|
| Younger Sister Role | 25% |
| Older Sister Role | 23% |
| Standing Sex Subject of (Sexual) | 18% |
| Twin Blowjob Engages in (Sexual) | 17% |
| Sitting Sex Subject of (Sexual) | 17% |
| Boobjob Engages in (Sexual) | 17% |
| Cowgirl Subject of (Sexual) | 16% |
| Quickie Fix Subject of (Sexual) | 16% |
| Handjob Engages in (Sexual) | 16% |
| Cunnilingus Subject of (Sexual) | 16% |
| Doggy Style Subject of (Sexual) | 15% |
| Group Sex of One Male and Several Females Engages in (Sexual) | 15% |
| Anal Sex Subject of (Sexual) | 15% |
| Bathroom Sex Engages in (Sexual) | 15% |
| Vaginal Fingering Subject of (Sexual) | 15% |
| Pregnancy Subject of | 15% |
| Incest Engages in (Sexual) | 15% |
| Sixty-nine Engages in (Sexual) | 15% |
| Missionary Subject of (Sexual) | 15% |
| Virgin Sex Engages in (Sexual) | 15% |