After moving into his wife's parents' home, Kōichi's life quickly became complicated. Busy with work and overwhelmed by daily responsibilities, he struggled to keep up. Amidst it all, there was one person who truly understood him—his mother-in-law, Hitomi. Sensing her son-in-law's anxiety and stress, she offered gentle comfort and support. Gradually, Kōichi found himself emotionally drawn to her. Within the bonds of family, a forbidden attraction began to take root.