"First Impact" is the much-awaited debut mini-album of Kep1er. It contains a total of six songs, with "Wa Da Da" serving as the title track. The album also features the group version of the songs "Shine", "Another Dream", and "O.O.O" which were first featured in the survival program "Girls Planet 999".
The album was supposed to be released back in December 14, 2021 but was postponed after one of the staff was diagnosed with COVID-19.
Swing Entertainment, WAKEONE