into the eriverse

7LITE was formed almost immediately after the conclusion of THE FUN FACTORY, and there have even been rumors that the trainees were in talks of becoming a permanent group during the survival show's airing. 7LITE debuted with "도깨비 (Hobgoblin)", but general public response was mixed at best. The group had hoped to drum up more engagement and interest with their sophomore release "DUM-DUM-DUM", but the album only did marginally better than their debut.

Shortly after the conclusion of "DUM-DUM-DUM" promotions, Sumire returned to Japan to attend her grandfather's funeral...and didn't come back. OURLITEs were worried about her absence as well as the other members' refusal to acknowledge it. On April 13th, 2020, Sumire finally announced that she had decided to leave the group and the company due to "internal problems".

The group then came back in late 2020 with "LITE Up The Sky". The video and costuming were noticeably a much lower quality, which prompted OURLITEs to urge people to stream and buy the album. The album became their most successful release yet.

In early 2021, Linney sustained a shoulder injury on a variety show and had to be hospitalized. She received surgery for the injury and was put on hiatus until further notice.

In mid-2021, Hady, a well-known Indonesian trainee under LITEHAUS, was added to the group. With Linney still on hiatus, the group performed as six for the rest of the year.

SOAR Entertainment had been in the process of creating Peek-A-Boo for several years, recruiting and dismissing members left and right. By the time Gayeon, Aria, and Sheena were added, Welsh trainee Heather Ahn was only one remaining trainee. Luckily, the company decided this was their ideal lineup and started preparing them for debut. They originally planned to debut in late 2021, but the debut was delayed due to "unforeseen circumstances".

Peek-A-Boo had a rather unorthodox debut. They debuted with two separate singles: one campier, cuter song, and one more mature, mysterious song. The public was so shocked that the members could switch concepts so well, they assumed two different groups had debuted with the name "Peek-A-Boo". In a Vlive, the members explained that they have a "peek" side (their cuter side) and a "boo" side (their girl crush side) and that they plan on being a group that is well-known for fitting both of those roles flawlessly.

There was some controversy as netizens accused the group of queerbaiting with their music video for "KISS YOUR LIPS". Sheena, the maknae of the group, replied to a tweet discussing the controversy: "Oh no...ㅠㅠ I did not plan on sharing this so soon, but I am bisexual. Please don't say weird things about me or my [groupmates]! eyeconic fighting!" She became an LGBT icon overnight.

Yunny started her idol career as a Banana Culture trainee, but ended up leaving the company to appear on THE FUN FACTORY. After the show concluded, she signed an exclusive contract with GIG Entertainment to debut solo. The offer turned out to be a scam and she lost over 46 million won.

Four years later, she appeared on a docuseries about failed idols where she spoke candidly about her awful experience and the repercussions she had to endure. She also gave idol hopefuls advice about red flags to avoid when getting into the industry. Her story got a surprising amount of traction with many people reaching out to her with love and support. One person who reached out happened to be the CEO of ONETAKE Entertainment, who offered her an exclusive contract (and this time it wasn't a scam).