The name means flower moon, an old name for March. Hanazuki was an Akizuki-class destroyer built at Maizuru Naval Arsenal. She was laid down on 10 February 1944, launched on 10 October 1944 and completed on 26 December 1944.
She reached Kure on 21 January 1945 and trained in the Inland Sea. On 15 March she became flagship of Escort Squadron 31. On 6 April 1945, with Kaya and Maki, she escorted Yamato from Tokuyama as far as the Bungo Strait. She stayed in the Inland Sea through the end of the war and was attacked by aircraft without damage.
She was struck from the Navy List on 5 October 1945. In June 1947 she was turned over to the United States and numbered DD-934, and she was sunk as a target off the Goto Islands on 3 February 1948.
Commanding officers, from the combinedfleet.com record: Commander Hideo Higashi, from 26 December 1944.
Sources: Allyn Nevitt's combinedfleet.com Tabular Record of Movement for IJN Hanazuki; Wikipedia, Japanese destroyer Hanazuki, rewritten here.