There's no chemistry between these two, at least when it comes to romance. And then Tatsumi is drugged and then repeately raped... he says he hates it every single time, but Morinaga always ignores it and takes advantage of him just to relieve his indescribable horniness. I mean, I read three volumes so far and it didn't change at all, and I expect it to be the same as Sekaiichi Hatsukoi, when it took (if I remember correctly) 10 volumes of constant rape and hating each other for the uke to finally confess his feelings.