Keep Heart

 is a song by Roselia.

The full version of the song will be included in the CD bundled with the Episode of Roselia I: Yakusoku Blu-ray. It will be released on December 15, 2021.

It is the gift song for the event Terrible Horror Night.

It was written by Oda Asuka, and composed and arranged by Takeda Yusuke.

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