PC (Windows) – distributed as a repackaged archive for easy installation. 1. Overview Natsuzora – Triangle is a Japanese adult visual novel (eroge) identified by the catalog number RJ01312904 . It belongs to the “triangle” sub‑genre, meaning the narrative revolves around a three‑person romantic conflict, and it contains netorare (NTR) elements—situations where a character’s partner is taken by another party, often creating feelings of jealousy, betrayal, and emotional tension.
