2+1 is threesome

The three of them are childhood friends then they went into study group the three of them . One of the seme wanted to try the "hypnosis" he learned from his major and try it out to uke. Unexpectedly, it works with the uke.

Uke is transmigrated in different world after he accidentally died in his original world. The world he transmigrated are different from his world which is coexist with human and beasts, however the Uke is unfortunate to be sold as an slave, luckily he is saved by the two beastmen in the cover.

Uke is in a relationship with the blondee who went into abroad to study. the maintain their long-distance relationship while the Uke is tutoring the black hair one who turns out to be the younger brother of his boyfriend.

Uke is in a relationship with the black hair seme, their relationship wasn't in the best to describe, Uke repeatedly threatens to break up, only to give in to his boyfriend’s demands every single time. Feeling wasted on the relationship and also not finding out the same hot as his boyfriend, the Uke made an offer to invite someone as the third party to spice things up in the bedroom only to find out that the blond seme is the guy from his major.

Love this trope, though it's obviously weird at first for only thinking Geonwoo as the bridge for Jiho and Haneul just to satisfy themselves in bed. I believe these three have way more long to go.

Yuki (uke) desperately to save his uncle's life seek help to his former childhood friend, Masashi. Then Masashi offered Yuki a deal along with the help of his boss Ryuu by selling Yuki in a pet-auction. Yuki is unfamiliar with the set-up is now receiving a training from those two.

Story is not bad. Uke is actually in good hands tho.

this is anthology and the one with threesome is under the title of "Brotherly Love"