eMkaii

i just cant remember the title or the author but it's an old yaoi manga, like, more than 5 years ago? i forgot the release date but i read it a long time ago.

plot:
the kouhai (seme) gets invited to gamble/play/get together in a senpai's house. they're like, college? idk high school? they're a group of friends and seme was new to the group. the house/apartment they go to belongs to the uke who is also a part of the friend group. they're just having fun together with the group. then seme falls in love with senpai uke. it's unrequited. uke is actually in a fuckbuddy relationship with one of their friends (guy A) in the group, and uke is in love with that guy A. seme discovers this.

there's this umbrella that guy A gave to uke in the past, and uke tried to give it to seme when it rained and he didn't have any umbrella to use. uke said that seme doesn't need to give it back, but seme gives it back the next day. (seme doesn't know it's from guy A) uke actually was trying to give away the umbrella as a sign for him to give up on guy A because he knows his feelings for A is unrequited, but seme gave it back without knowing anything.

seme tries to proposition uke and makes efforts for them to get closer. seme tries to make uke fall inlove with him instead, but gets Rejected. uke explains the umbrella situation. i think seme broke the umbrella (not sure) to show uke that he's only hurting himself by holding on the anything about A. uke gets angry, and told seme to leave.

they graduate and separated and did not see each other again until they became working adults. uke is an employee of a partner company that will be working with seme.

seme tries to show nonchalance, but is still inlove with uke. seme sees uke receive a message from A even after all this time, asking for uke and A to meet.

seme meets A first and confronts A that he knows uke's feelings for him but doesn't stop their f-buddy relationship together. seme tells A to stop. A says okay. uke shows up and gets between them. uke explains to seme that A is actually already married to someone else at that point. uke wraps up his relationship with A and A accepts the situation.

uke and seme leave. they talk. it rains. seme holds uke under his own umbrella under the rain. they get together.

that's it. i think.

i need help finding this manga pleaseeeee.