I have dated all the girl and shall add more to that list:
- Queen - Go talk to the slut in the house near the beach
- Futa girl in the forest - Talk to sqeezer guy south, black knight in the westnorth park and fishing girl near the beach
- Red demon girl - Just talk to her and commit lewd
- Researcher girl - Talk to all the busty girl i.e. Bunny girl, crape girl, Nun, etc
- Our succubus overlord - Try talk to all male NPC like the black knight, sqeezer guy, etc
- The loli - Overdose her with juice from sqeezer guy then go to public toilet
- Slime girl - Sqeezer girl will sqeeze her and enjoy some rare fetish
- Silver witch - Go the the bar at night, Bunny girl will prep the place for us to mingle
- Slut - Go the the bar, become exhibitionist
- Ninja girl - Talk to Nun, Silver witch(appear at castle entrance at noon), Black knight north of the church and Green lion girl.
As for crush....I suppose try not to trigger end event inside a building.
I am quite certain Rami a.k.a. Fishergirl can't be date