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Requesting Suzuka-hime laying down, arching her back and fingering her navel whilst fondling her breasts. A sensuous, sultry look is on her face as she's wildly blushing, maybe have her suck on her finger until saliva is coating it and then sticking it inside her bellybutton, a saliva trail connecting her tongue to her umbilicus.
Or just her pointing towards her navel and saying something along the lines of, "Lick it," or, "This hole, it was made for you."