Spoilerr.
(All what I gonna say isn't 100%true cuz I was too lazy to translate every fucking dialogue cuz u was so pissed off)
I saw the raws I didn't understand well cuz it was in fucking Korean , anyway they had like a deal to live together because the twin brother ris in love with both of them I guess (•‿•) ( and cuz some family problem idk) and in fucking ch 45 the uke dragged the twin to their sex cuz the twin was watching them and masturbating alone

Comin from the future they gonna have. A threesome at ch 45