bow genichiro acini(mod) (Sekiro: Shadows Die Twice)

on the nexus there is a mod that adds the HS on the back of the bow genichiro asini he is, after passing half of the game(checked with saves) but when you start a new game it is not!
so the question is what is the reason ?maybe he replaces the sword immortal?


link to the mod:https://www.nexusmods.com/sekiro/mods/328