Nana Okada is a Japanese singer-songwriter and actor, represented by Avex Asunaro. She is a former member of the girl groups AKB48 and STU48. She was a fixture on AKB48's major single lineups from 2016 to 2022 and is considered one of the best singers to have been part of the group.

STU48 (Setouchi48) is a Japanese idol group and sister group of AKB48 named after the Setouchi Region. The group had a shipboard theater from 2019 to 2021. It is co-owned by the tourism board of Setouchi Region and is highly involved in their promotional efforts. The group's captain is Azumi Okada and the vice captain is Akari Fukuda.