Thanks! Pretty much once you get to g rank it's always wild, XD even late high rank too tbh. Frontier mostly focuses on just being an action rpg through and through.
I did upper shiten for the first time yesterday and apparently got the best sigil right away, with two red colored affinities (i don't remember their value, either 15 or 25) and a 7 attack, my luck is that i was doing it with a squad so i could skip a bit of the learning process