kouno (masao), cheep cheep, frog luigi, frog mario, luigi, mario, mario (series), nintendo, super mario bros. 1, super mario bros. 3, green headwear, red headwear, bad id, bad pixiv id, 1-up mushroom, 1up, 2boys, ?, ? block, animal costume, ass, brothers, cloud, creature, day, dressing, facial hair, fish, frog costume, hat, multiple boys, mushroom, mustache, realistic, siblings, stretching, swimsuit, water, what