The Chief Knight of Wind. A Noblesse desiring to become a Wind Archer should speak with her after reaching level 10.
Her FriendStory counterpart is the captain of the archery team. In Chapter 6, Irena is offended when Damien offends her friend, Boogie, and starts a band with her friends in retaliation to Damien's own band. She starts finding a part time job to fund her band equipment, but everywhere she turns, Damien had already been working there before her. In the end, Irena's band manages to score higher than Damien. Damien does not apologize, but comments that her song wasn't "half bad".