Embrace Me, You Handsome Devil! ~I Tried Seducing My Former Lover~ summary:

"Even if I'm reborn again, we'll always be together..." One day, Tsubaki, a freelance writer, is asked to get a drink with Mashiro, a random college student. Not at all the type he'd get along with, but gets the feeling he's met Mashiro before... He takes the dead-drunk Mashiro home to take care of him when he's suddenly pushed down passionately, telling Tsubaki, "take me"...!? Adorable Mashiro takes him with his tongue, deeply and sweetly, throwing all of his logic out the window...