"Beautiful Day" is the twenty-eighth single by the Japanese hip-hop group Lead, released on August 23, 2017.

[5] The type C DVD was a behind-the-scenes look at the making of the single's cover art and a video of the group spending a day on the island.

The lyrics to the coupling track "Shampoo Bubble" were written by Lead member Akira Kagimoto.

Sean Alexander has worked with the likes of South Korean artists Kim Hyun-Joong, TVXQ and Girls' Generation.

[8] The lyrics to the coupling track "Shampoo Bubble" were written by Lead member Akira Kagimoto.

The music was written and composed by Matt Cab and RYUJA, the latter who has worked with the South Korean group BTS (known in Japan as "Bulletproof Boys").