The manga is good and I really liked it.
I thought we would see saguri chan getting mad or sad about the past because tsumu stopped visiting saguri.
I also thought there would be a character that would steal saguri chan's heart.
No sort of big conflict.
Author didnt said anything about why saguri cannot go out before. (idk if im wrong or just missed it) cuz I also theorized that if saguri was weak before and was able to go explore at high school then I think that the parents of saguri let her do what she wants because she only has a small time to live with.
But good thing that didnt happened. Because I dont want it to be like a bitter ending or like "your lie on april" cuz it damn hurts.
Overall the manga is very good