Levi was confused. In fact, Percival's father Vandro had once suffered a great loss under a female legendary knight. This female legendary knight was Flower Knight Elena!
After suffering a loss, Vandro couldn't forget about the Flower Knight, so he drew this portrait based on his memory and placed it in his bedroom to admire it every day.
This silly son of his was determined to avenge his father and take this portrait away. If he met the Flower Knight one day, he would clear the name of the Eight Blades Sect!
After that, he died at Levi's hands.