Even if they are step-parents, a bond like that of real parent and child should emerge. Believing this, Shiori has been seriously facing her husband's stepson, Takaaki. Thanks to this, she has been able to build a close relationship with Takaaki, almost like that of a brother and sister. However, Takaaki actually has romantic feelings for Shiori. Unexpectedly, Shiori is shaken and rejects him, but from that day on, she begins to notice Takaaki...