Gyangu no Kai-kata
Mafia lookin' dude from the 1920's time travels into the future and meets a salary man that he then threatens then almost rapes but not quite, they get along after some time and start having sex and profess their love for each other. The time travel part is never explained for some reason.
Listen Attentively
Ch. 80 end A musician with high expectations from his father travels back in time to meet a famous musician. On bilibili comics - Damn that was so good. I actually cried a bit.
Yixia Fan Shang
Ch. 71 (Updated till ch106 but last updated was more than a year ago (excluding the new mature chapters) so I'll hold off for now) It's tagged yaoi AND shounen ai cuz while there is smut, it's all censored, even the kisses are censored T_T anyways it was really good. Story about a nine tailed fox monster getting revenge on the humans that killed his entire tribe. To do that he has to gain the trust of a certain apprentice. Also in Webcomics but need to pay
Stanning 101
Ch. 76 Dude time travels back in time because he wished to stan his bias earlier since he's going off for military service and meets one of his bias' friend and somehow becomes his manager and yada yada lotsa drama and they fall in love and get together. - Ngl the start was embarrassing as hell I was cringing so much contemplating why am I even reading this lol. Also I love .
Primitive Boyfriend
She travels back in time to meet her soulmate and his reincarnation to find him in her time.
Never Days
Cute oneshot of a dude from the future going back to the past to save his crush from dying and to confess to him.
Sijin