Seme is unhealthily possessive: even if the author wants to make it look cute, it doesn't reach its full kawaii potential 'cause of the seme's selfishness. So self-centered. Even at the end, he says "for the one I love", there's still the concept of himself to it. I didn't see any character development. The uke just compromised to the brat seme and called it a day.
Kingyo no Koi