Japan is characterised by the one of the highest rates of adoptions in the world. Japan boasts one of the oldest family-run businesses in the world, from centuries old Guests Houses to big corporate firms. Many Japanese firms like Suzuki, Matsui securities break the ideas of dynastic decline by maintaining a steady family legacy. The reason for this is adoption. Nearly 98% of adoptions in Japan are adult men, between 20 to 30 years of age. The practice takes many forms like a mukoyōshi who is an adopted husband, marrying into his wife’s family and accepting their surname. The adopted sons who don’t marry into the family generally take a bride outside the family. Though the practice has gained momentum as a modern practice, it is prevalent ever since the Japanese civil code mentioned that only a male child can succeed the family assets and business. If in case there is no male heir, adoption is an option.