I need help finding this manga
It's about this high schooler who notices this senpai in the library who always watches his older brother play soccer outside. The MC later on started being interested in that senpai. Later on he heard from his brother that they were friends back then but because of the accident when they were playing around in the storehouse or something like that and a rake fell on his back when he protected his friend and he ended up with a bad injury on his back. And when they were at the hospital the MC blamed it on the senpai that it was his fault. So after that incident the older brother and the senpai stopped being friends.The MC felt really bad for blaming it on the senpai and went to apologize and they both confess to each other.
The brother had 3-4 scars on his back..
Thank you.

A friend helped me find it 🙂 It's the last chapter from Gerbera.
Thank you to those who tried finding it.
Thread can be locked 🙂