Prior to its suspension of activities and withdrawal in May 2024, the team played in V.League Division 2, the second-level Japanese volleyball league.

[1] Originally called Miyoshi Cardiology EKG, then Miyoshi Cardiology EKG Oita,[2] the team was named "Weisse Adler", meaning "white eagles" in German, for the characters "white eagle" (白鷲, shirawashi) in the name of the Seiun Shirawashi Association (青雲白鷲会) of the clinic.

[3] The founder, Hiroshi Miyoshi, was the director of the hospital and was also involved in the management of the team.

[7] Oita Miyoshi Weisse Adler was demoted to V.League Division 2 after losing the V.Challenge match of the 2022–23 season to Voreas Hokkaido.

[4] The next month, the franchise announced the suspension of all activities and their withdrawal from the new V.League in late May as they were unable to find a company to transfer the team to.