ylong, oyama mahiro, tenkawa nayuta, onii-chan wa oshimai!, absurdres, hashtag-only commentary, highres, 2girls, back-to-back, blush stickers, colored inner hair, dated, green eyes, hair bun, hair ornament, hair ribbon, happy birthday, holding, holding test tube, jacket, loafers, long sleeves, looking at viewer, multicolored hair, multiple girls, neck ribbon, one eye closed, open mouth, orange eyes, pantyhose, pleated skirt, pointing, pointing at self, ribbon, school uniform, shoes, single hair bun, sitting, skirt, smile, suspender skirt, suspenders, test tube, yotsuba university affiliated junior high school uniform