Зречення імператора Акіхіто

Yes. Akihito expressed a wish to hand over the throne because of his age and health; parliament enacted a one-time special law because the Imperial House Law then had no provision for a reigning emperor to abdicate. He abdicated on 30 April 2019, and his son Naruhito acceded the following day. Japan’s government described it as the first abdication in about 200 years; the last emperor to abdicate had been Kōkaku in 1817. This was not a plan that could proceed without legislation: special legislation was required to make it possible.