oshiruko (tsume), chara (undertale), frisk (undertale), undertale, utdr (toby fox), 2others, blush, breast sucking, closed eyes, clothes lift, french kiss, half-closed eyes, hand on another's waist, holding hands, hug, kiss, lifting another's clothes, monochrome, multiple others, navel, nipples, open mouth, sepia, shirt lift, short hair, simple background, striped clothes, striped sweater, sweat, sweater, yellow background