Responses
Haru wo daiteita is the only one that I can think of right now. Too bad I can't help you with more :*
Reversible couple is all sensei who work Under Grand Hotel. But as her works all are including cheating, betray, shameless couple, etc. Search under grand hotel. All sensei works are reversible
Does anyone know of yaois where the couple exchange their paper as the uke between them?