"Why is a perfect specimen of a man like me getting this turned on by a guy like that?!" Thus begins the obstinate relationship of a playboy narcissist and a deceivingly frumpily-dressed, hot bodied otaku...

Youji Takashima is a high schooler with a major 'sister complex' towards his older sister, Senko, 26, whom he's living with... One day, she introduces him to one of her old friends from college: Ren Akishima...