Circus is the second Japanese-language extended play (EP) (tenth overall) by South Korean boy band Stray Kids.

[11] The final track, "Your Eyes", is a ballad love song driven by piano about the lover's gaze with the feeling of anxiousness sometimes but still wishing to be happy in the relationship.

[9] To promote Circus, Stray Kids appeared on the covers and gave interviews for the July–October 2022 issue of Japanese magazines CanCam.

[12] Mini,[13] Nikkei Entertainment!,[14] Pia Music Complex,[15][16] Vivi,[17] Smart,[18] and Rolling Stone Japan (only interview).

[25][26][27] Stray Kids gave the debut performance of "Circus" at the first Kobe show of the Maniac World Tour in Japan on June 11.

[31] The group performed "Circus", along with "Back Door", at Buzz Rhythm 02 on July 9,[32] and the two-hour special Music Station on August 5.