Haejoon collapsed probably because he's been injured a few times recently, plus the mental/psychological exhaustion caused by going back to his house and facing his trauma and the reality that his mother is dead.
We know he thinks of Eunyung as a younger brother but it's nice to get it confirmed like this. Tbh, I do ship Haejoon and Eunyung but it doesn't seem like the author is going that route, especially since Haejoon is aware of the "pretty girl" being interested in him.
Having said that, I still hope Haejoon and Eunyung live together even if Haejoon goes to college and after that. My prediction is that Eunyung will call Haejoon "hyung" before this ends because we also know Eunyung thinks of him as an older brother, a friend, a person to come home to. They are each other's home. Their connection is different from their friends and that's why they are the main characters on the cover.






It's a crime for this to be a one-shot. At least we know now that Tsujimura has also been watching Yoshimatsu. They have been mutually interested in each other for some time. "Everyone probably knows Tsujimura-san does not smoke" but he started going to the smoking area to talk and be friendly with his savior. Now that Yoshimatsu finally realized his feelings are not paternal, their love story is about to start.
I know it's impossibe but I really wish the mangaka revisits this one shot and write the continuation. It would be so funny when Yoshimatsu tells Tsujimura how he used to think of him as his only daughter.
5/5