Fuyu no Okurimono

An original short directed by Kazuaki Terasawa, animated by WIT STUDIO and assistance from studio Kafka. It tells the story of a young girl's growth through an encounter with a mysterious creature.
(Source: Anime News Network, edited)
Note: The short premiered in a preview screening event together with "Mahoutsukai no Yome SEASON 2" episode one at Tachikawa Cinema City's Cinema Two in Tokyo on March 11, 2023. The animation was later uploaded onto the FlyingDog YouTube channel March 18, 2023. It will be also included on the limited first edition version of JUNNA's 5th anniversary 3rd full album "Dear" (CD+Blu-ray) released on April 12, 2023.