Hana no Kioku Dai 3 Shou

Collection of five short erotic stories.

1. 3P with SM
2. Date with a girlfriend ending up 3P with sister
3. Schoolgirl insult in the back alley on the way back from school.
4. Date resulting in master-slave relations due to meeting a SM lady
5. Gokkon date turning into orgy

[From vndbreview]