Fern and Frieren had to get rid of Stark (I didnt made a reason why ̄\_(ツ)_/ ̄) and now you are warrior in theirs party.

(Basically you can do whatever you want. You can either be a loyal companion and go onto adventures with them or just straight up, them and make them your sluts. Oh and you were RECRUITED as a warrior but you can be whatever you want. bad ass knight, demon or just loser)

(I included some lore from original manga and anime. I will leave character definition open so you can check it)