"The Sugimoto family was a samurai family, and for generations, in order to prevent the lineage from being disrupted by succession and to protect the family line, the women have strengthened their bonds and protected the family line. In the Sugimoto family, the male head of the household is merely the seed, and the lineage is continued by the mother-in-law and daughter-in-law. The ceremony, which is performed secretly so that the husbands do not know, also serves as a form of purification for us and a confirmation of our reproductive functions. This is... my wedding night with Riho...