Kura Kura (くら くら, lit. "Dizziness") is TWICE's 8th Japanese single, released May 12, 2021 via Warner Music Japan — their first Japanese release since BETTER seven months prior. Announced live during the TWICE in Wonderland online concert on March 6, 2021, the single arrived in four versions. Limited A includes a CD+DVD and 24-page lyric booklet; Limited B includes a CD and one of three types of original photo sticker sheets; both Limited editions and the Regular version include 1 of 10 trading cards. The ONCE JAPAN fanclub edition includes a 3×3 fold poster and two of 10 trading card types. Generasia The four-track release pairs the J.Y. Park-penned title track with B-side "Strawberry Moon" — notable for collectors as that track was later re-recorded and released as a standalone Korean single in October 2021, making this its first physical appearance. The MV pre-released April 20, with digital audio following April 21; the physical release was celebrated with a YouTube-broadcast showcase on May 12 and a Music Station performance on May 14. The single was certified RIAJ Gold for surpassing 100,000 copies sold.