I watched this one a good while ago, but I remember it fondly as baby's first fuck-anime, so I'd like to check it out again – a guy returns to the temple where he grew up to discover he must fuck three (maybe four?) Nonhuman chicks. He accidentally promised to marry them or something? The girls all have colour theming going on and I think he fucks one in an onsen and another with red hair rides him cowgirl style.
Any help would be appreciated! Please tell me if I've fucked up and am breaking the rules again ://