They were kind of rivals but the uke wakes up in a different dimension where they're lovers. Then when uke finally starts falling in love with seme he wakes up again in the original dimension where they're enemies. I forgot the title. Urgh
http://www.mangago.me/read-manga/i_m_banging_my_rival_from_a_parallel_world/
Thanks gang!
They were kind of rivals but the uke wakes up in a different dimension where they're lovers. Then when uke finally starts falling in love with seme he wakes up again in the original dimension where they're enemies. I forgot the title. Urgh