オーケー？　オーライ！ (OK? All right!) is a solo character song for Nadeshiko Igarashi (五十嵐 撫子), a member of the fictional light music club HaNaMiNa from SEGA's Irodorimidori (イロドリミドリ) multimedia franchise. The track was composed, arranged, and written by Yosuke Sato (佐藤陽介), with vocals performed by seiyū Miharu Hanai (花井 美春) in character as Nadeshiko. Its music video was directed by 鑓田 (alpha complex). The title, a cheerful, self-affirming phrase, matches the song's upbeat J-pop energy, with lyrics that convey encouragement and confidence. The song first appeared in CHUNITHM AMAZON at that version's launch, marking Nadeshiko's musical debut in SEGA's rhythm game ecosystem. It later crossed over into maimai でらっくす Splash PLUS as part of a limited-time collaboration event, where players could unlock it by progressing through the HaNaMiNa Area (HaNaMiNaちほー), a themed in-game map requiring a cumulative distance of 350 km. The unlock ran from April 9 to June 24, 2021 in Japan, with staggered releases in Asian and Chinese regions following later that year and in 2022. In maimai, both the EXPERT and MASTER charts were designed by the prolific notes designer はっぴー (Happy). The MASTER chart carries a difficulty constant of 12.8, placing it at the upper tier of Level 12+ with a note count of 752, heavily emphasizing slide patterns (139 Slide notes) while maintaining a brisk BPM of 150 throughout. An instrumental version of the song was also released on the "STAR"T single, expanding its presence beyond the arcade.