[Demon slayer] The only goblin prosecutor who is endlessly corrupted [jealousy]-kokusibo

Among the characters in Demon Slayer: Kimetsu no Yaiba,
Kakushibo is a character born from the motif of jealousy.
He gave up his human life
and ultimately chose to live as a demon... I'll briefly explain why.

Kokushibo, whose real name is Tsugikuni Michikatsu,
Despite being a demon, he is a swordsman who wields a sword.
He uses a concentrated breathing technique, and during the process of using this breathing technique,
a single spot appears, resembling a demon's symbol...
When this spot manifests, the precision of his physical abilities significantly increases.
It also has the effect of greatly enhancing his combat abilities.
One strange thing will arise.
Why is it that when Kokushibo becomes a goblin,
the gap in combat power between him and humans widens,
but he tends to focus more on swordsmanship training...
A period nearly 500 years in the past...
In other words, it's quite closely related to that time when he was human.


The relationship between Kokushibo(Michikatsu) and Yoriichi
Michikatsu, knowing that his younger brother Yoriichi
was inferior in swordsmanship,
dedicated himself to surpassing him.
It was during this time that he learned the concentrated breathing technique and the stippling technique,
not the blood demon technique.
He discovered the stippling's fatal weakness,
and ultimately became a goblin.
He became the strongest of his time in the Upper World.
However...
I'll stop here.
Thank you.