Kepler (Choi Yu-jin, Xiaoting, Mashiro, Kim Chae-hyun, Kim Da-Yeon, Hikaru, Huening Bahiyyih, Seo Young-eun, and Kang Ye-seo) posted the first music video teaser of the title song "DOUBLAST" on their official SNS at midnight on June 16th.

The video released on the same day showed Kepler enjoying happiness on "Kepler Island" in the summer. The nine members, who melted perfectly in the summer filled with vivid colors, gave a thrilling pleasure just by looking at them with upgraded visual growth.

The fresh atmosphere that has drawn on the trendy beat also raised the happiness energy of viewers by creating a screen reminiscent of a high-teen magazine and harmonizing perfectly with Kepler's free-spirited charm.

The song "바로 지금이야," expressed by a lively vocalist, was drawn at the end of the video, raising questions about the main part of the music video, and the video's beauty, which seems to be watching a fairy tale, further boosted the refreshing charm of the title song "Up!" Kepler captured the hearts of global fans by capturing the two charms of the previous versions of "Lemon Blast" and "Blue Blast" at once.