robomito, oyama mahiro, sakurada yuuta, senkawa minato, onii-chan wa oshimai!, absurdres, commentary, highres, 1girl, 2boys, ahoge, bare arms, bare legs, bare shoulders, barefoot, blue one-piece swimsuit, blush, brown eyes, brown hair, feet, genderswap, genderswap (mtf), grey hair, hair bun, hugging own legs, multicolored hair, multiple boys, nose blush, one-piece swimsuit, pink hair, sitting, smile, sweatdrop, swimsuit, toes, two-tone hair, wavy mouth