Members of virtual girl group OWIS / Courtesy of All My Anecdotes

The virtual idol market is expanding fast, and the field is getting crowded.

A string of new groups have debuted in recent months, staking a claim in a space that one act has come to define — and none of them are close to catching it yet.

OWIS, a five-member girl group under All My Anecdotes, the label founded by Kiss of Life creative director Lee Hae-in, debuted on March 23 with EP "Museum." While the real identities behind the virtual avatar members — Serene, Haru, Soi, Summer and Yuni — have not been officially confirmed, it is widely reported to include former NMIXX member Jini, former Lovelyz member Ryu Su-jeong, BigHit Music producer Adora, "Produce 101" contestant Lee Ruri and Lee Hae-in herself.

B:DAWN under Duri Entertainment followed on May 6 with debut single "Beom." The group's five members — Dojin, Ion, Kangho, Woorim and Hansol — are built around the concept of former competitive athletes.