Natsuiro No Kowaremono After [upd] Instant
You play as Takumi, a jaded city boy forced to spend his vacation in a rural coastal village. The "heroines" are exactly who you expect: the shy childhood friend (Yukino), the energetic foreigner (Erica), and the mysterious shrine maiden (Mizuki). The art is typical for the era—big eyes, soft pastels, and a UI that looks like a scrapbook.
On the surface, it has all the hallmarks of a forgettable summer romance VN: a returning protagonist, a seaside town, a childhood friend, and the oppressive heat of Japanese August. But if you go into this game expecting fireworks and festival dates, you are going to leave with a very different kind of trauma. natsuiro no kowaremono after