
Maybe, I forgot or something but what's happening in the last two pages? Someone please explain..

Osaragi likes iishigami. because back in middle school she watched him and noticed that he does very nice things for ppl around him (it seems to not be romantic, she doesn't want to date him). So the reason osaragi is supporting ishigami and tsubame is because she wishs for ishigamis happiness. i hope that makes a little more sense?
The art is beautiful with exquisite detailing. I just am not a big fan of teacher x student and cousins as lovers tropes. Even so, the plot was well done. The pace was good.
I absolutely love Makoto's character. His remarks were all practical and his concerns were valid too.