Takakashi Weapon Soul tier(s) up App

Key: Takakashi z
Character: Salt
Skill(or transformation): Weapon Soul Tier(s) Up
How well do you know the source material?(obviously not relevant if it's a transformation):yes.

Reasoning: Going through a small, personal journey, Salt went upon a quest to retrieve Mordred's sword from its discontinued use. While he can not unlock its power just yet, he sought to acquire the weapon and unlock its secrets through means of training. He battles through users of the Hiten-Mitsurugi fighting style in order to obtain the location of the blade! Through this, he goes on an even longer quest that left him darting about the city itself, until Fiddel bestows the weapon upon him.

 TLDR; lvl up