I liked your game, the characters and content were relatable. That feeling of being faded, not fully human, because you don't have people you feel a connection with is very real and prevalent today. It's kinda brilliant that you have the MC commit suicide in part, according to his own internal monologue, because he hasn't accomplished anything worthwhile by 25. I say brilliant because that's obviously not the real reason, because he regains his motivation to live in spades after dicking around in an amusement park with a bubbly girl. Accomplishing or not accomplishing anything was never the problem, and was only an illusory barrier or hurdle he thought the had to overcome before deserving to feel okay being human.
I see you're planning a part 2, that's good. I hope Summer is okay. She is really sweet and adorable. It makes more logical sense if she was always just a personified aspect of the protagonist's psyche, and so not a real person and capable of living outside of his dream, but I still want her to be having fun with him forever, even through whatever hardship is still in store for MC as he heals.