I'm obsessed with this visual novel and have been playing Keisuke's route during company time. I couldn't put it down, and played what has been released pretty much in two sittings (only because I played it till 3am and passed out from exhaustion).
Overnight, Zach/Zoey became my favourite gender-bender protagonist. I didn't expect this of a game I downloaded just for gender-bend NSFW. Zach/Zoey's intelligence was conveyed very well in both his dialogue and inner monologue (I was playing with high Emotionality and Self-Esteem).
I'm a sucker for childhood friend to FWB routes and Keisuke's route hit all the right notes for me, especially during the dialogues about their past. He is an equally well-written character and the chemistry between him and Zach/Zoey was great. I'm rooting for them!
Other things I liked: The personality sliders genuinely affected the writing and it's the first time I've seen this done well. The H-scenes were really hot. I can probably cover up the character names and I'd still be able to tell who is talking. The dev's charisma passion for this project really coming through in the dev notes (I ended up reading so many of your devlogs afterward). The nerdiness of everyone. How wise some of the dialogue is.
I am so curious about what it will be like playing with other settings so I will do the GL routes soon.