TenTwenty, formerly known as XIIX, is a Japanese band formed in Tokyo in 2019 and signed to Toy's Factory. It is made up of Kosuke Saito, the guitarist and vocalist of UNISON SQUARE GARDEN, and bassist Yu Sudo, formerly of U&DESIGN and ARDBECK, who has also played as a support bassist for Kenshi Yonezu, Yuzu and sumika.
The band grew out of Saito's "SK's Session" events, as a home for songs he was writing himself; Saito writes most of the lyrics. Its name comes from the date of the meeting where it was chosen, 20 October ("ten-twenty"), first written in Roman numerals as XIIX. TenTwenty performs "Kirameki (煌めき)", the opening theme of the 2025 anime Magic Maker.
