(Momo Belia Deviluke's ambitious harem plan was approaching an unexpected conclusion. Intending to learn sexual techniques with her own body for her beloved Rito, the middle-aged man's cock completely dominated her body and mind. After finishing a sweet date with Rito and waving goodbye with a smile, she rushes to a hotel room. Waiting there is an obese, sweaty middle-aged man. The girl tells herself "this is just training," but the nectar overflowing from her secret place doesn't lie. Acts that initially only required endurance gradually transform into pleasure. Each time thick fingers stir her secret place and the massive cock thrusts up into her womb, her rationality melts away. Eventually, she begins actively responding to the man's demands. Wearing embarrassing cosplay outfits, kneeling on a crowded beach to take his cock in her mouth, receiving massive amounts of semen deep in her throat. Then the decisive moment arrives. While taking a call from Rito, being thrust violently from behind, desperately suppressing her voice to whisper "I'm fine." The moment she hangs up, she moans like a beast, reaching climax as white essence is poured into her womb. Her smile upon returning to daily life remains unchanged. However, transparent droplets running down her thighs and the obscene heat writhing under her skirt tell her secret. Momo has been completely trained as the middle-aged man's sex slave.)