Ryua

"How humble you are! Helping your teammates without showing off! That's so classy and noble of you!"

- Ryua speaking to Yihwa

Ryua (류아, lyua) is an associate of Yeon Yihwa, given the respect Ryua shows to Yihwa, it seems she might be a servant/caretaker of Yihwa or a lesser member of the Yeon Family.

Appearance and Personality
Ryua is a completely ordinary woman with brown eyes, short brown hair, and she has a mole under her right eye.

She is very trusting, since she instantly believes the stories Yihwa tells about her climb. She also likes to gossip, informing Yihwa about the rumors surrounding Jyu Viole Grace.

Powers and Abilities
It was not mentioned that she was a regular or not, but given her attitude, it seems she is just a resident of the tower and not a regular or ranker.

Tower of God: Part 2 - The Return of the Prince
She is seen talking with Yihwa, complementing Yihwa on her fast climbing of the tower and warning her about the dangerous regular called Jyu Viole Grace.

Alternate Translation

 * Ryuah