Title: Cosmos no Sora ni
VNDB link: https://vndb.org/v1132
Youtube walkthrough: https://www.youtube.com/watch?v=uGwZh6UO_I8&list=PLs4Gp5VU4Fv_pLYRQ-EmpvifHrzh7BvC2
Length: 5 hours per route, five routes overall + 3 short omake stories
Game type: Comedy school nakige
Difficulty: There are over 50 choices per route. Most are fake ones, of course, but I'd better follow a walkthrough.
Character Design rating: 8/10
Protagonist rating: 7/10
Story rating: 6/10
Game quality: 7/10
Overall rating: 7/10
But then I played Haruhi route... and that was totally from a different league. As tsundere, she explodes at even the mildest jokes and starts chasing Yasuomi. She's just superfun to play pranks on. Somehow, I'm not tired of tsundere characters yet, and she's less generic tsundere as she does not uses "betsuni" and the like words. She's also really pretty and has both swimming suit and maid themes to develop. Her serious nakige part had an emotional impact on me, especially because her route has two endings with songs in a row very different from each other. That's all I can hint without spoiling much.