My Delinquent Gay Little Brother Trained His Big Brother Into a Sex Addict

Delinquent gay younger brother Nao (Naoyuki) ties up the older brother who once protected him in order to monopolize him. Using rotors, dildos, bondage, and jealous psychological pressure, Nao trains him into a sex addict. The older brother resists at first, then grows responsive to the stimulation. Eventually he begs for Nao's penetration. This leads to incestuous anal sex between the brothers.