An innocent 19-year-old who has not been tainted by anything. A petite 149cm body with miraculous proportions of I-cup breasts. She is shy, but when she gets going, her expression changes from "innocent" to "adult". She gets seriously into sex while passionately kissing with her tongue moving seductively. She is also highly sensitive, writhing in pleasure with her whole body twitching... Shion Yumi is a big-breasted girl who has yet to be explored, so please look forward to it.