JK is short for Joshi Kosei, "High-School Girl" in Japanese!
About forced love interests, I wasn't liking Yukari's library scene, but I decided to trust it was happening for a reason, and lo and behold, that was the case (just like it was for Aki's shorter bedroom scene). When it comes to Jun, I do not like her, however I have enough media literacy to understand things are building up to something with her (wheter I will like it is another thing, but I get she's important to the story you want to tell). When it comes to Mana though, I get how her family issues are neccessary for the plot to move forward, however up to the end of CH2 I never felt MC getting sexual with her (so early on) was. She feels like Miri and Nao, sub-heroines put on "having an early H-scene for impatient players" duty, only unlike them, her scenes are not avoidable (or, one of them is, but seeing the preceding one is forced).
When it comes to background characters, stuff like getting a chance to compliment one of them during the track and field choice I love, please have more of those haha. Main heroine who? Let me flirt with that unnamed tertiary character with 0 previous screentime haha.
Good to hear chapter 3 is almost done, I'll take a break and pick the game back up in a couple of months to play it all in one go!