BanG Dream! 9th☆LIVE was the franchise's ninth official live.
It was held on the following two set of dates:

August 21 & 22, 2021 (Titled The Beginning, with Poppin'Party and Roselia performing)
September 4 & 5, 2021 (Titled Mythology, with RAISE A SUILEN and Morfonica performing)
It was held at Fuji-Q Highland Conifer Forest, the same location where BanG Dream! 8th☆LIVE was also held. The concerts were live-broadcasted in select movie theaters in Japan, Hong Kong, Taiwan and South Korea.[1]

"The Beginning" was opened by D4DJ's Tsumugi Risa, Tsunko, and Shindou Amane; while "Mythology" was opened by Kagami Karin, Takagi Miyu, and Hazuki Himari.

[Disc 1]
BanG Dream! 9th☆LIVE「The Beginning」DAY1

Poppin'Party
1.ティアドロップス
2.夏のドーン！
3.Returns
4.Hello! Wink!
5.イニシャル
6.ここから先は歌にならない
7.Moonlight Walk
8.二重の虹(ダブル レインボウ)
9.Light Delight
10.Live Beyond!!
幕間映像Ⅰ

Roselia
11.熱色スターマイン
12.R
13.ONENESS
14.Proud of oneself
15.PASSIONATE ANTHEM
16.BRAVE JEWEL
17.Safe and Sound
18.Sing Alive
19.BLACK SHOUT
20.Sprechchor
幕間映像Ⅱ

Encore
1.キズナミュージック♪/Poppin'Party×Roselia
2.FIRE BIRD/Roselia×Poppin'Party

[Disc2]
BanG Dream! 9th☆LIVE「The Beginning」DAY2

Roselia
1.PASSIONATE ANTHEM
2.R
3.Break your desire
4.Proud of oneself
5.熱色スターマイン
6.BRAVE JEWEL
7.Safe and Sound
8.Sing Alive
9.Neo-Aspect
10.Sprechchor
幕間映像Ⅰ

Poppin'Party
11.Time Lapse
12.ここから先は歌にならない
13.イニシャル
14.夏のドーン！
15.Hello! Wink!
16.Moonlight Walk
17.二重の虹(ダブル レインボウ)
18.Light Delight
19.STAR BEAT!～ホシノコドウ～
20.Live Beyond!!
幕間映像Ⅱ

Encore
1.FIRE BIRD/Roselia×Poppin'Party
2.キズナミュージック♪/Poppin'Party×Roselia

[Disc3]
BanG Dream! 9th☆LIVE「Mythology」DAY1

RAISE A SUILEN
1.Domination to world
2.Invincible Fighter
3.A DECLARATION OF ×××
4.mind of Prominence
5.HELL! or HELL?
6.CORE PRIDE
7.OUTSIDER RODEO
8.Beautiful Birthday
9.!NVADE SHOW!
10.DRIVE US CRAZY
幕間映像Ⅰ

Morfonica
11.Daylight -デイライト-
12.chAngE
13.金色へのプレリュード
14.ハーモニー・デイ
15.Sonorous
16.Secret Dawn
17.flame of hope
18.V.I.P
19.Nevereverland
20.ブルームブルーム
幕間映像Ⅱ

Encore
1.UNSTOPPABLE/RAISE A SUILEN×Morfonica
2.flame of hope/Morfonica×RAISE A SUILEN


[Disc4]
BanG Dream! 9th☆LIVE「Mythology」DAY2

Morfonica
1.Daylight -デイライト-
2.CQCQ
3.金色へのプレリュード
4.ハーモニー・デイ
5.Sonorous
6.Secret Dawn
7.flame of hope
8.V.I.P
9.Nevereverland
10.ブルームブルーム
幕間映像Ⅰ

RAISE A SUILEN
11.A DECLARATION OF ×××
12.HELL! or HELL?
13.mind of Prominence
14.EXPOSE ‘Burn out!!!’
15.CORE PRIDE
16.Domination to world
17.OUTSIDER RODEO
18.Beautiful Birthday
19.!NVADE SHOW!
20.DRIVE US CRAZY
幕間映像Ⅱ

Encore
1.flame of hope/Morfonica×RAISE A SUILEN
2.UNSTOPPABLE/RAISE A SUILEN×Morfonica