Skylark was someone who had killed Tsundria's twin sister. On top of that, a few times Tsundria tried to get her revenge, Skylark defeated her and told her that her hands were too holy to kill her.
"If you keep troubling me," Skylark's words reverberated inside Tsundria's mind. "I'll send someone to kill you instead of me. My hands are too holy to kill someone as stupid as you. Now, get out of my sight!"
That time, Tsundria felt very humiliated. When she recovered from the wounds of their battle and regained her strength, she started training like never before and hunted Infectect monsters the same way, trying to boost her strength so she would go teach that bitch a lesson one day.
A few months ago, she tried her revenge again. Unfortunately, as the saying goes, if he punched you, he can do it again. She lost the battle and Skylark fled the scene after humiliating her for the second time.
