We gradually sexually develop Urara, a shy girl inexperienced in erotic matters. We stimulate her body in various ways, such as making her shave in the bath or ambushing her right after she pees to perform a penis-vibrator blowjob. We tickle and tease her while she's doing workouts in her competitive swimsuit, desperately trying to elicit reactions from her. Slowly, she begins to get used to it, progressing to a full course of pleasure including kissing, having her breasts licked in bed, handjobs, cunnilingus, fingering, and vibrator play. Finally, we cap it all off with deep, full penetration, perfectly tailored to her body.