Marry you? Yes, I will!
Hide & Seek
HighSchool boys trapped in a fantasy world
Oni no Esa ja Arimasen
Chapter 2. Demon seme revealed that he will eventually eat uke as a whole once he gets out but in the mean time, he needs to feed on uke's "deliciousness". Also uke questioned who sealed see there in the first place
The Alpha's Bride
Ch 20.2 kinda all over the place (because were at the climax) so wait for a few more chapters. Alpha's parents shoo'ed the omega away because they found out that he was a son of a slut and not worthy to marry the alphaband let alpha marry his omega childhood friend. Omega became aggrieved and saw himself not worthy so he ran away from alpha and pushed him away. Alpha's possessiveness flared up and did omega alot until omega got hosputalized due to exhaustion. This made omega get angry for alpha and alpha avoided omega to not hurt him. Suddenly omega recieved a call.
Toshishita Kareshi ni Semararetemasu