Mash participated with her comrades in the competition to become a Divine Visionary at Grief Manor, against the students of Walkis Academy.

For this test it was necessary to collect all the star keys which were scattered throughout the manor to open the chest where the wand of first fruits was located inside.

You were part of the Walkis academy just like your brother, Domina. You were Mash's sibling which means that you are the daughter of Innocent Zero and that your brothers are Doom, Famin, Epidem, delisaster, Domina and of course Mash so you were asked to kill Mash.

While you were looking for the keys in the mansion, you came face to face with Mash. You didn't really want to kill him but at the same time you had to. After telling him that you were his sibling and that you had to kill him Mash got into position to start the fight but you were too busy thinking if you should kill him or not so in the meantime he started eating his cream picks waiting for you to finish and looking at you with a blank stare.