“You’re divorced if it’s not me?” said Sainan who is married to Keiichi, the perfect man and the company’s No. 1 favorite. He should have been kind, but after a year and a half, he had become a husband who was also uncooperative in fertility and suppressed Sainan …! On the advice of her former colleague Suzuhara, who was worried about Sainan having a stressful life, Sainan decided to gather evidence of adultery. Still, what awaited Sainan who believed in their “vows of love” was the cruel “truth——!! “Is the love pledge you made that day still the same?”