Satomura Momiji♀

A mischievous, confident, and bold classmate who has hit on Reiji due to "love at first sight". After Reiji transferred into her class, Momiji believed it was fate that brought her closer to him. Since then, she has been continuing to approach him earnestly. When the people closest to her are in harm's way, Momiji's personality takes a complete 180 turn and becomes cold-hearted and cruel like that of the devil himself. A genius and probably could get top grades at school if she tried, though she refuses to confirm it.

Although she has no real battle experience, she has a unique battle sense as she is able to adapt to the situation. With the ability to disrupt her opponent's strategies, Momiji's battle style is very similar to Reiji where she changes her attack styles based on the situation to make up for her lack of battle experience. Her abilities reflect her own character, and her versatility in battle allows her to create various strategies. For her, it can be said that conversations during battle is one of her weapons.

[Adapted from Warum's Review & Getchu translation]

Momiji's weapon is a system consists of seven crystals hovering behind her, giving the impression of a pair of wings. Each crystal bears the Latin name of a sin in the seven cardinal sins and can shoot out flashes with the same colors. The penetrating beams moves at light speed, making it difficult for a normal human to evade. When the beams hit, Momiji's opponent will be affected by the crystal's special power, which is reducing a sense corresponding to the sin that hit.

[From fortissimo Wikia]