The seme is a ...

misogynistic pig. He uses all the hurtful phrases that typical men who wants their girls to be "pure", but not them uses. He applies values one sidedly and put him first in every situation. If the author wanted to redeem the seme in the extra, she actually did the opposite. Whats up with seeing him in a cafe where everyone can see what they are doing and think it's ok to go to Boob places and grope and kiss random women. He sounds like the type who would be all possessive as long as they are in a relationship and stop caring the minute they break up.