Hikaru-chan, the cute girl who's great at cooking, makes her appearance! Though she has a boyfriend, she isn't fully satisfied with him alone and reveals her naughty side. Her boyfriend consults an older colleague about his troubles, ultimately leading to a threesome at his place. In an even more surprising turn, she receives intense, thorough training in ultimate eroticism from her master. Who would've thought she'd show such a wildly sensual side!?