Incest stories are exceptionally difficult to write well since the situation is extremely uncommon and against human nature most of the time. This is the BEST incest story I've read so far. Fluent story progression, deliberate subtle emotional changes of characters, right-in-place relationship depictions, plus the hilarious, skillfully written dialogues involving a LOT of memes, all together result in this enjoyable masterpiece.
There are downsides, though. (The following review is based on version v0.50 of the game.)
1. It claims to be choice-based, but the choices you need to make are 1) binary most of the time, 2) have the "one correct answer" that seems pretty obvious and the other answer totally redundant, and 3) the story is basically linear without branching. So this game doesn't really provide much of an interactive experience. Just a novel.
2. Sex scenes are rare (up to the current version) and not of a very high quality. In other words, not a very "fappable" game in my opinion.
3. No music or any sound effect, a pretty common problem with indie VNs, which damages the experience a lot.
It barely deserves a 4-star as a fappable game, but as a VN this is absolutely beyond 5 stars. This community needs more well-written stories like this.