http://www.mangago.zone/read-manga/encirclement_love/
Probably this one?
no that's not it but thank you for introducing me to a new yaoi lol. I loved it! The siblings of the main characters are actually side characters too, it was just a side story. I still loved the story thought lol.
I'm glad you enjoyed it but I'm sorry that title wasn't it. ╥﹏╥
no, thank you! thanks for taking your time to reply to me.(๑•ㅂ•)و✧
it's a yaoi but all of a sudden i started remembering. At the end it showed a side story of two childhood friends/the brothers of the main characters getting together and well,, doing the deed. I totally forgot the name! I know it's vague but i just wanna reread it