Ayaka has brought light to the hearts of others and her own heart through singing. The "20 Lights" indicated by the title are proof of Ayaka's journey and the irreplaceable bonds she has woven together with her fans. This best album is the culmination of her career, filled with all the colors that have been lit year by year. The CD contains a deluxe three-disc set with 39 songs in total, divided by concept into [Kizuna] (Disc-1), selected through fan request voting, [Hikari] (Disc-2), allowing listeners to experience the 20-year journey and present that Ayaka wishes to convey, and [Enishi] (Disc-3), created together with a lineup of artists (common to all versions). In addition to signature songs such as "I believe," "Nijiiro," "Mikazuki," and "Minna Sora no Shita," it also contains new songs including "OK! GO!," the theme song for TBS's "Osama no Brunch," and "WELL come," written as a Leverages commercial song, making it a collection worthy of her 20th anniversary. Compatible with Sumapura.