Jun (Higuchi Yukihei)'s college senior Kimura Shinjiro (Maehara Kohe) came to Meiyun Law Firm for consultation.“Jun, I'm done, I...”According to Shinjiro, the blood type of Tsubasa, the one-year-old son he gave birth to with his wife Akane (Yoshimoto Minoru), is type O.Because Shinjiro is type AB, and Akane cannot give birth to a child with type O regardless of blood type, the result of the DNA test is that there is a 99.9“ probability that there is no paternity relationship.

Asuka (Marijun Takahashi) pointed out that Shinjiro's wife might have been pregnant with another man's child and raised it as Shinjiro's child, which is the so-called "borrowed egg", and began to investigate.

On the other hand, Asuka was told by her ex-husband Tatsuya (Kanako Toaki) that she wanted to start over, and she was greatly shocked in her heart.And the true identity of the woman in the ”cheating photo“” that led to their divorce, Masaki Rika (Miyama Kaien), is...