[Marushamo] A situation in which the shrunken older brother is forced to spend a month in a sock

A shrunken brother learns the hard price of withholding pudding when his sadistic little sister sentences him to a full month sealed inside her worn, sweaty socks, his tiny body pressed helplessly against the soft, overwhelming expanse of her soles. As she lounges lazily and savors her snacks, she taunts him about the stench, the sweat, and how far he's fallen from the brother who once raged to escape — and by day 31 he's little more than a dazed, passed-out plaything soaked in her scent. Just when his sentence finally ends, her sweet smile delivers the cruelest twist: the opposite side of her shoe, and one more month to endure.