I.one is the upcoming three member sexy/girl crush girl group from LPA Entertainment. The group consists of members Eunsol, A-Young and Jena, Jena being the latest member to join the group. The group had many line-up changes so far, so don't be surprised if the actual debut line-up is not the same as the one listed here.

Some former members include Ria/Lia, Hayan, Narin and Joha, and these are the ones I could find. They probably have more former members.

The only consistend members seem to be A-Young and Eunsol.