I had to transfer to Tokyo for work, so I stayed at my sister's place while looking for an apartment. It had been a while since I'd seen her, and she'd changed—living in Tokyo had given her a more mature, sophisticated charm. But inside the house, she was just as carefree as ever, walking around in revealing outfits, her big tits nearly spilling out of her clothes... Seeing her like that stirred up an uncontrollable desire within me...