foskosa, frisk (undertale), undertale, utdr (toby fox), commentary, highres, 1girl, battle, black shorts, blood, blood on clothes, blue sweater, bone, boots, border, brown boots, brown hair, dappled sunlight, evil smile, holding, holding knife, impaled, indoors, injury, jumping, knife, light particles, midair, midriff peek, motion blur, ornate border, outdoors, outstretched arms, red eyes, running, running towards viewer, shorts, smile, sparkle, striped clothes, striped sweater, sunlight, sweater