Shūsei Tokuda: 1 works in the original Japanese, with translation

Under the Meiji Civil Code, a man and woman living together did not necessarily have to register their marriage. 入籍 means formally completing the family-register procedure, giving the wife and her illegitimate child legal status. In the text, the 入籍 and the birth registration are completed at the same time, showing that the two had previously only been cohabiting in fact, and that the child was born out of wedlock; only after the registration were the wife and child entered into Sasamura's family register.