The 19th volume of Hello! Project's Petit Best series, which are annual compilations released at the end of the year, with an occasional remix or new song included.
Members performed mid-tempos and ballads from the Hello! Project catalog, for which they were split into 2-3 smaller sections and combined into six "half-and-half" units, with 4-5 members each. Held at Nippon Budokan.