This is their second single since their major debut. The title track "WARAiNA" is a hyper smile song of historic scale in ONE N' ONLY's history, filled with overwhelming happiness and a glamorous parade-like atmosphere. The song title "WARAiNA (Waraina)" and the chorus lyric "One Right Now" create a play on words that lingers in the ear, resulting in a track overflowing with positive energy that expresses the brightness of the future ONE N' ONLY is heading toward. The Regular Edition (First Press) comes with a 16-page lyric booklet and one trading card randomly selected from 12 kinds (two member solo designs each + two group designs, first press only). *The trading card designs are the same for Limited Edition Type A, Limited Edition Type B, and the Regular Edition (First Press).