The plot usually revolves around the protagonist staying overnight at a relative’s house and getting involved sexually with a younger female relative (cousin, niece, etc.). The narrative is minimal — just enough to set up the taboo situation. No complex plot twists.
Art style ranges from amateurish to decent doujin-level CG. Characters are often designed as loli or young-looking (which may be illegal in many countries outside fiction). Backgrounds are simple — bedroom, living room, bath. shinseki no ko to o tomari dakara dub
However, if this is a specific indie short or a lesser-known OVA that has gone viral on TikTok/Twitter, the dub situation is very different. The plot usually revolves around the protagonist staying