Rin harbors a secret love for her home tutor, Mamoru. Though Mamoru appears to be a flawless good guy, he is actually just trash. He's made debts from gambling and spends his days fearing the collectors from loan sharks. Unaware of this, Rin gradually builds a good relationship with Mamoru... One day, a collector named Orihara shows up at Mamoru's place. Orihara finds Rin's photo on Mamoru's smartphone...
