Proud of oneself

 is a song by Roselia.

The full version of the song is included in the mini-album BanG Dream! Episode of Roselia Theme Songs Collection. It was released on June 30, 2021.

It was used as the opening theme song for the movie BanG Dream! Episode of Roselia Part I: Yakusoku.

It was written by Spirit Garden, composed by Agematsu Noriyasu, and arranged by Fujinaga Ryutaro.

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