Takuran Tsuma to Sare Otto

Yoshito Ohgiri, the protagonist of "Mendicant Wife and Husband," was supposed to be leading a happy life with his wife, Shioriko (Kako), and their only son, Kodai, who is five years old. One day, however, he suddenly underwent a blood test and found out that Kodai's blood type is B, which is not supposed to be born to him and his wife. Yoshito wanted to believe Shioriko, but there were a number of things that came to mind, and he began to suspect the possibility of "mendicancy". Gradually, the true nature of Shioriko, who he thought was kind and serious, is revealed.

(google translated)