Bokura wa Nando mo Koi o suru
This was so beautiful and sad. It has a happy ending though. The uke and seme are sex buddies but the seme always says he wants more. The uke holds back. The seme ends up dying in an accident and the uke finds a thing that lets him travel back in time to save the seme from death and this time have a relationship with him. He keeps dying so the uke travels multiple times. Eventually he finds the timespace where they both live and are together.
Kakkou no Yume
Seme has a sex friend but only uses him as a substitute because he can't be with the one he really loves, his best friend. The two of them (the best friend and his sex friend) get into an accident and switches bodies (actually the sex friend is lying about switching, he just wants the seme to love him and not just use him. The seme ends up falling inlove with his sex friend. Who apparently has loved the seme since high school
No More Lonely Night
Seme and uke hook up through a dating app and meet up repetitively. The seme falls inlove and wants to start dating but gets rejected. He finds out the reason why when on one of his bring your parents to school day (seme is a teacher) the uke shows up with one of the kids in his class (uke is omega so basically the childs mom).
Hadaka yori mo Oku Fukaku
Seme is a virgin that the Uke picks up at a club. They have an unforgettable one night stand that had sparks flying between them. However they accidentally meet again at the college the uke works at and the seme is a student at. They have sex with benefits then overcome misunderstandings and start a relationship
All Night Long (muno)