At least one heroine is the protagonist's half-sister. A half-sister is a female sibling who shares one biological parent with the other siblings. Do not confuse with Step-sister. Half-sisters share blood relations, while step-sisters do not.
| Name | Similarity |
|---|---|
| Half-sister Role | 41% |
| Half-brother Role | 33% |
| Younger Sister Role | 25% |
| Incest Engages in (Sexual) | 20% |
| Older Brother Role | 20% |
| Cooking Engages in | 19% |
| Older Sister Role | 18% |
| Brother Complex Personality | 17% |
| Cowgirl Engages in (Sexual) | 17% |
| Blowjob Subject of (Sexual) | 16% |
| Twin Tails Hair | 16% |
| Daughter Role | 16% |
| Pervert Personality | 16% |
| Doggy Style Engages in (Sexual) | 16% |
| Hard Worker Personality | 16% |
| Father Role | 15% |
| Blond Hair | 15% |
| Ribbon Hair Tie Clothes | 15% |
| Vaginal Fingering Subject of (Sexual) | 15% |
| Handjob Subject of (Sexual) | 15% |