Recently, my sister has gotten unusually fat and can't wear her pants. She asks me for support, but my perverted little brother's mischievous heart is ignited, sticking his hand into his sister's panties and moving his fingers. From here, the brother gradually escalates, deceiving his serious and innocent sister with twisted plays like 'Do iruma to make your face smaller,' 'Ride on top and shake your hips to create a waistline,' 'Do missionary to train your abs,' and 'Drink semen to make your skin smooth.'
