koharu2.5,nintendo,splatoon (series),splatoon 1,callie (splatoon),1girl,bare shoulders,bow-shaped hair,breasts,cleavage,collarbone,cross-shaped pupils,detached collar,earrings,highres,inkling,jewelry,long hair,medium breasts,monochrome,pointy ears,portrait,short eyebrows,simple background,solo,symbol-shaped pupils,tentacle hair,upper body,white background