|English Name||Heart Challenger|
|Release Date||February 13, 2021|
|Sung by||Takanashi Kiara|
"Heart Challenger" is the second original song of Takanashi Kiara. The song's music video was unveiled on February 13, 2021. It was then released as a single later the same day.
||Heart Challenger - Instrumental
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Heart Challenger - Takanashi Kiara (Official Music Video)
- Feb. 13 Music video and single release date.
- This is Kiara's second original song.
- Released a "Live cheering guide" dressed as Takanashi Eggiara