Living with her older sister and brother-in-law, Suzu notices her brother-in-law is struggling with premature ejaculation. With a kind heart, Suzu proposes to use her own body to help him train and improve. Gentle, melting kisses and nipple play, along with clumsy but dedicated handjobs, push her brother-in-law's dick to its limit! Unable to resist his sister-in-law's tight pussy, he explodes with a creampie! Soon, Suzu becomes addicted to her brother-in-law's dick, constantly begging for more. "You can cum inside me anytime!"