natsuki subaru, re:zero kara hajimeru isekai seikatsu, highres, 1boy, alternate costume, black hair, chair, closed mouth, contemporary, crossed arms, full body, hair slicked back, jacket, legs up, long sleeves, looking at viewer, lying, male focus, monochrome, multiple views, on back, pants, partially colored, shoe soles, shoes, short hair, simple background, sitting, sketch, sneakers, spot color, track jacket, track suit, upside-down, zhulock