Muteki na Heart

"Muteki na Heart" (無敵なハート) is a song by Japanese singer songwriter Mai Kuraki, taken from her third compilation album Mai Kuraki Best 151A: Love & Hope (2014). It was released on August 27, 2014, and served as the theme song to the Japanese animation Case Closed. It was released as a double-A side with "Stand by You".

Music video
A short version of the official music video was first released on Kuraki's official YouTube account on October 10, 2014. As of August 2022, it has received over 1,090,000 views on YouTube.

Certification and sales
! scope="row"| Japan (RIAJ)
 * 29,517 (physical sales)
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