"Stronger" (stylized in caps) is a song by Japanese-American singer-songwriter Ai featuring Japanese singer Miliyah Kato.

AK-69 and "Wavin' Flag (Coca Cola Celebration Mix) (Sekai ni Hitotsu no Hata)" with K'naan.

[2] When the collaboration single offer was presented to Miliyah Kato, who is good friends with Ai,[2][3] her reaction was "Finally!

The lyrics are a message song, instructing the listener to survive through "any kind of future," and talks about the limits of a person.

[9] To promote the single, Ai featured in magazines such as Blenda, Glamorous, Hanachu, Nikkei Entertainment, Ori Star, Ranzuki, S-Cawaii and Woofin'.