To become a certified public accountant, Masaru went to Tokyo but failed the exam multiple times, leaving him deeply disappointed.
To cheer up her son like this, Rina takes Masaru on a hot spring trip. She genuinely worries about Masaru, who has no energy.
Though Masaru was exhausted both physically and mentally, he couldn't help but get an erection when he saw his mother in her yukata after the hot spring.
Shocked by continuously failing the exam, this was his first erection in three years. The long-awaited erection made Masaru's crotch hot and unbearable.
He quietly lifts his sleeping mother's yukata to sneak a peek at her breasts…
