Hitomi smiled, watching her niece go to work, a twinge of pride going through her at the sight, causing her to blush a little. She followed Trina over to Rika, smiling as her niece put Rika in the same position that Trina had just been in, if a little modified to take into account the restraints. Hitomi kissed Trina's lips. "Good, very good, Trina...Now then.." She smiled, her hand grabbing Trina's new penis softly and rubbing it up and down against Rika's folds, no doubt sending an inferno of pleasure through the girl's nerves. "She looks like she would be a virgin...so make sure to go slowly, Trina...we don't want to hurt the girl..we just want to show her how good it feels..." Hitomi smiled, moving over to Rika's front, letting her watch as Hitomi began to stroke her own cock at the site of her niece about to fuck the helpless and bound Rika. "mmm...Don't worry dear...I'm sure once Trina is done with you, you'll just be begging for more...then it won't be so hard for you to keep our little secret..." She smiled with a laugh, looking to Trina. "Begin when you wish, Honey....remember, start with a slow thrust to ease her into it, then speed up as you go along..." Hitomi smiled, reaching under Rika and grabbing her breast to send a jolt of pleasure up the girl's spine, Hitomi's other hand stroking her cock, loving what her 'innocent' niece was about to do...