Namida Surprise!
Song by Yasushi Akimoto and Yoshimasa Inoue
"Namida Surprise!" is the 12th major single by the Japanese idol group AKB48, released on June 24, 2009. The single peaked at number 2 in the Oricon weekly singles chart.
It is a Birthday song Wikipedia
Composers: Yoshimasa Inoue and Yasushi Akimoto
Lyricist: Yasushi Akimoto