"Beautiful" is a Japanese song recorded by South Korean boy band Treasure that was released in full version on February 14, 2021, by YGEX for the Black Clover anime series and the lead single for the Japanese version of the group's debut studio album.

On December 15, 2020, the official website of the Black Clover anime announced that the group will perform the 13th ending theme of the anime with a song called "Beautiful", which is set to be premiered for the first time on January 5, 2021.

[7] "Beautiful" is a medium-tempo J-pop ballad song with positive lyrics and warm emotions.

D&H and Sunny Boy served as the co-composer of the song in the key of C major with a tempo of 128 beats per minute.

[9] Production group TinyVoice was credited as the producer in which Jun, D&H, and Sunny Boy were part of.