[Kume (Minakami Riku)] The Hidden Theory of Happiness

A collared youth bound at the wrists finds devotion sharpened to a point as his lover holds a tiny needle to his aching cock and ass, warning him to stay still while fear and arousal blur. Between forced, semen-slick kisses and relentless anal that leaves his dick and ass sore yet still trembling for more, punishment and tenderness become inseparable. When an uneasy feeling follows them from the bedroom to a nighttime rendezvous in Shibuya centered on Noda-kun, their hidden theory of happiness teeters between painful possession and a surrender that feels dangerously like love.