I apologize in advance because this is not a summary :-D but I can tell you this.. it's happy and sad, it's heartbreaking and healing and everything in between.. so READ IT.. you won't regret it, I promise. It's a gem :-)
I'm afraid I'll spoil it for you if I say anything but please trust me when I say that it's an amazing manga and you should just read it! I agree with @airi_daffodils, it's both heartbreaking and healing. It's deep and emotional but also funny and crazy lol I suggest you read the manga before watching the anime tho because it might not be adapted well since the author's works are very... I don't know how to describe them but they're simple and still hit you where it hurts, you know? at least I think so.
I suggest you check out the author's other works as well like the Haikyuu doujins and the drama cds if you can find them.
p.s. If you decide to read it but want someone to read with you so you can rant about it then I'm your girl (づ￣ ³￣)づ
I really want to read it, but I'm scared it's heartbreaking. I wanna know what happens and the characters before I read it so I can prepare myself. Especially since I want to watch the anime and be prepared. The PV sounded sooo amazing.
Thanks :)