When his mother Hikaru started running marathons, Jun could no longer control the feelings he had been hiding. The sight of Hikaru stretching and working out in front of him was so erotic and sensual that it stirred Jun's Kokoro. He knew he couldn't allow himself to lust after his mother... but he couldn't stop his feelings. A streak of sweat that made her skin look shiny, the hair that clung to her skin, the faint scent of a female. When Jun was exposed to the pheromones contained in Hikaru's sweat, his reason collapsed with a sound...