Our Guild's Idol is a Manga/Manhwa/Manhua in english language, Drama series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

"Ah-jin," who was enjoying the game using her younger brother's account, approached the female user [Flower Princess] for the sake of the guild, but ended up being identified as a lurking female. "Actually, I'm a woman...!" Meanwhile, 'Ji-hyeon,' who is secretly active as [Flower Princess], feels that the voice in the video sent by Ah-jin sounds familiar...