I played this game on BlueStacks, an Android emulator.
This is a short game with a few options, each of which seems fairly strong. It uses a variety of Japanese words, often with explanations. There are several points where it seems like the game gives you freedom to make big choices; I didn't replay to verify.
It's hard to explain the story or to check the interactivity, because the game was really hard to understand. Usually a game is hard to understand because the author struggles with grammar or the story was written by AI and is bland, but this story seemed like it was written by someone with perfect English and unassisted by tools. It just is...weird. There's a lot of elaborate high language interspersed with random curse words. The language used is full of metaphors that didn't quite make sense to me. I think there was an experiment involving reviving someone in a relationship, but beyond that...I'm not sure.
An impressive amount accomplished in 4 hours, but it remains a mystery to me.