He is a young healthy male, but, loneliness peers over him, His mother died several years ago, his father abandoned him. His father is also in huge debt, of 100,000,000 yen. He met a boy around the time his mother died, He vaguely remembers it. All he wants is for someone to want him.
Miisu reminds him of it in the final H-scene, and his memory returns, it was Miisu who said "will you play with me?".