GENM-079 - My niece getting stuffed by a giant uncle while her parents are away

Narumi is left home alone for 3 days while her parents are on vacation. Her giant uncle stops by under the guise of checking on her, but once inside, he forces himself onto her. He pins her down, claiming he'll mold her into his perfect toy, and relentlessly stuffs her with his massive member. Thus begins a 3-day nightmare of forced confinement and non-stop action.