I actually liked the fact that Noboru got really mad when the uke tricked him with that hickey, it made him feel more human and real. Way too often with this kind of "rookie" seme when the slutty/more experienced uke pulls a stunt like this, the seme either 1. cries, 2. swears he'll become better, 3. silently accepts it or 4. goes after the guy the uke cheated (or pretended to) him with.
I actually liked the fact that Noboru got really mad when the uke tricked him with that hickey, it made him feel more human and real. Way too often with this kind of "rookie" seme when the slutty/more experienced uke pulls a stunt like this, the seme either 1. cries, 2. swears he'll become better, 3. silently accepts it or 4. goes after the guy the uke cheated (or pretended to) him with.