tsundere.. you'll get used to it someday.
He seems different from the tsunderes I have seen in the past. Most likely because we don't know if he likes him. I think he does but as I have experienced people whom use the crushes people have had for money and the fact they introduced a second character whom our main seems to be fond of currently it adds more confusion and interest to the plot.
I think he's at least sexually attracted to him if he wanted him to crossdress for him. Since he'd already heard the uke refusing his assistants when they asked him, he would have to have known already that it would be a risky gamble, in terms of seduction. I can't imagine someone going that far just to get a few sales, lol. I think he was just jealous.
can't tell if he likes our main character and is just an ass or he is using the fact the main character likes/liked him to seduce him into buying more stuff. Either way he is an ass. Question is will he be a likeable ass. Cause as it stands he is currently the charming ass with him charming others even though he is acting like a bully to our main.