After five years of marriage, Ms. Tsuno no longer feels the excitement in her married life. She used to celebrate anniversaries and go on trips despite being busy, but apparently, there hasn't been any of that in recent years. Moreover, the lack of communication with her husband is severe; not only has their intimate life diminished, but they also rarely eat together, and recently, they have even started sleeping in separate bedrooms. Perhaps due to the loneliness in her daily life, she has developed a wandering eye to fill the void in her heart.