|Relationship Status||In a relationship|
Mercuria is a character that appeared in the seventh character of the visual novel Hybrid × Heart Magias Academy Ataraxia. The commander of the "Tigris" or Second squad of Vatlantis Imperial Guardshas the opposite personality as that of Hyakurath. She has an easy going personality but when facing a crisis she can be calm. Mercuria is an archer. She has superior skills in long range battle though she can also fight in close quarters using her bow as a blade. Her skills are competent enough to match Aldia. Mercuria came from a noble family in Vatlantis.
- Mercuria displays possessiveness when it comes to Hyakurath. She has a grudge towards Hida Kizuna due to his ability and often warns him not to approach Hyakurath.
- Her family is close to Hyakurath and after spending some time together she developed an attachment and admiration to the latter. When she was of age, she displays no interest in social gathering and Hyakurath even made her realize her life has no direction. Upon the invitation of her best friend, decided to join the Imperial Guards, taking the same path as the person that she admired did. When Hyakurath rose from the ranks and become the captain of the "Leon Squad" she quickly ascended in the hierarchy as well by being appointed captain of the "Tigris Squad".
- There are times where Mercuria would make sexual advances on Hyakurath.