Seo being an Artificial God test subject makes me wonder if she was a failed experiment by the Cardinal who created Avenir. And could we possibly get Avenir as a hero please?
don't know about Fleck. got Uzume on Random contract pull and yes she failure on pvp. I gave her 2800 magic penetration and her damage is still garbage, only good for debuffs on enemies, but there's other units that can do that.