Himitsu no Hana no Niwa
English title: Nana's Secret Garden
Japanese title: 秘密のはなの庭
Type: ONA
Source: Music
Episodes: 1
Status: Finished Airing
Aired: Mar 21, 2023
Duration: 6 min
Rating: PG-13 - Teens 13 or older
Producers: TOHO animation, Sonilude
Genres: Drama, Fantasy

The music film is a part of TOHO animation's 10th anniversary project.