this was fun, I can get why other people might think it ended too abruptly but honestly I had always gotten the feeling that the story was going to end once they graduated and Lin Luxi got out from under her mothers control. Like this is where a new part of their lives starts so it figures if the author wanted to end anywhere it would be here.
And yeah on a certain level it sucks that Lin Luxi's mom never stopped being homophobic, but Lin Luxi moving away to live on her own with Tong Tong is just as much of a resolution to this storyline as it would be if her mom learned to be better.
Also "turns out that GTB is a highschool romcom AU spinoff of a furry 18+ comic" yeah??? I would love to see that, hell yeah.