[Like the name said, heroic background music is a skill to open BGM when the situation arises. No need to worry, as the BGM will be chosen automatically to match the situation the user is facing and play it for the people around the area to listen. During the duration of BGM, the user's overall ability will be significantly improved. The cooldown of this ability is 24 hours.]
I Was Reincarnated Into Honkaiverse, But I’ve Never Played the Game
Anime & Comics · Zimrence
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