This is just my understanding of the situation, maybe he thought that he is scared cause he doesn't know that his heart should be pounding like that when he likes someone or do.. That kinda stuff.. (probably it's his first time liking other people), and misunderstood that as the fear instead
That's why he keeps on saying he is scared when he is pretty much just an airhead lol, tho I'm not complaining really sometimes this kinda dynamic what makes it funny
At first maybe that was the case, MAYBE, but later on it become apparent that he was scared of the amount of pleasure he would experience, i guess you could say overstimulation (being eaten literally got him hard). Even later on he didn’t want to tell hadoka that he felt good from him just brushing his arm. I could totally be wrong tho
Only thing that bothered me was that he was constantly spouting “I’m scared” like BYE espceciallh when HE was doing the teasing PUH-LEASE