For 10 points, Kochan develops into a sadistic homosexual in what autobiographical second novel by Yukio Mishima?
When shaking the hand of a friend, the narrator of this work feels a sense of shame because the skin is cracked and caked with dirt and oil. Earlier in this work, the narrator describes a thought process shifting from a feeling of superiority to the belief that "Everyone is like me" as being a "steppingstone to aberration". During a daydream, a cook throttles a schoolboy and the narrator is bathed in a shower of blood, after stabbing a fork into the boy's heart, and carves his classmate for his dinner guests. The narrator of this novel accidentally hears a girl playing the piano, which leads him to have an affair with Kusano's sister, though he eventually refuses to marry Sonoko. The sight of hair growing from Omi's armpits amps up the narrator's jealousy and desire for that boy, and other images which arouse the narrator include blood spurting on torsos and depictions of St. Sebastian. For 10 points, Kochan develops into a sadistic homosexual in what autobiographical second novel by Yukio Mishima? 
When shaking the hand of a friend, the narrator of this work feels a sense of shame because the skin is cracked and caked with dirt and oil.
Confessions of a Mask [or Kamen no Kokuhaku]