After five years of marriage, Ichiro has been struggling at work and at home. He is exhausted by daily life, his wife refuses to have sex with him, and he is at rock bottom both in his private and public life. Then, through his wife's introduction, he meets Yumi, an insurance saleswoman... Ichiro is instantly Kokoro by her voluptuous, glamorous body as she smiles and presses her huge breasts, which are about to spill out of her clothes, against him. Then, Yumi sneakily tells him, "I have another contract I'd like to recommend..."