Oddly enough I didn't consider an in-game birthday, though one of the characters does have a "getting what I wished for" scene coming up lol
I’m now wondering if you are planning for the MC to meet the girls family or best friends from their home worlds on Spring, Summer, Fall or Winter Breaks. You could even make a spinoff story of each girl before they came to the college if you get bored or writers block. Chuckles I wonder if any of the girls have already marked a date they considered was your both first date? If so does the MC remember the date and will he take her back to the same place on the years anniversary? Or will she tell her friends and family that you forgot and how will they respond when you made her sad for forgetting the day? Chuckles even if the girl forgives you the family and friends will always remind you and I mean every single year. Even if you’re off 1day I was off a day because of a skip year and I just went with the last day of the month so I could easily remember it. I hate skip years. Well Take Care 😉 ps you should consider Spring, Summer, Fall, and Winter as holidays for your girls of nature. Spring=planting Summer=growth Fall=harvest Winter=memories or story telling. Would love to see what vision you could create as a festival for the above 4 Seasons in the girls home world.