Yakusoku

is a song by Roselia. It is the title track of their 10th single, with "UNIONS" Road as the coupling track. It was released on January 15, 2020. The Blu-ray edition includes the 2nd and 3rd episodes for BanG Dream! 3rd Season, and also one of the five character cards. It is the gift song, and was also one of the challenge songs for the event Noble Rose -Bearing Flowers-. It was written by Oda Asuka, and arranged and composed by Takeda Yusuke.

Videos
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Lyrics
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Chart Performance

 * On January 14, 2020, a day before the single's release, it ranked 5th in the daily singles ranking in Oricon.
 * On January 15, 2020, Yakusoku rose up to the 2nd place in the daily singles ranking . The digital version of the single also ranked 3rd on the iTunes store and 1st in mora in the overall category.
 * On January 23, 2020, the single ranked 5th in the weekly singles ranking.

Trivia

 * In-universe, during the events of Noble Rose -Bearing Flowers-, it is implied that the lyrics of this song are written by Imai Lisa.