saki-chan's recent problem is her large breasts, inherited from her mother. due to these big tits, saki-chan has been suffering from severe shoulder stiffness lately. her brother, who loves big boobs and is a siscon, gives her a massage! the well-developed breasts of his little sister drive her brother to his limit. under the guise of a massage, he gropes her tits! saki-chan, who is weak to pressure, finds herself being played with by her brother before she knows it. enjoy the sight of her little sister blushing and feeling embarrassed!