"Lock End LOL" is the second single album by Weki Meki. It was released on May 14, 2019 with "Picky Picky" serving as the title track. The physical release comes in two versions: Lock and LOL.
A repackage titled "Week End LOL" was released on August 8, 2019.
"The Girls Running on the SANMAGIYET-GIL" (산막이옛길을 달리는 소녀) is the second promotional digital single by Weki Meki. It was released on November 11, 2020 to promote North Chungcheong Province, as part of a 2020 cultural tourism program.