Shadow Skill
Season 1, Episode 22: Older Sister, Younger Brother
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Once Diaz is gone, Gau finds no purpose to fight. Only to remember he couldn't become the shield to protect Diaz during the battle with Darkness.
All Episodes - Season 1
Episode 1
The Power of My Blow has No Equal!
Episode 2
Duelists
Episode 3
Phantom's Keepsake
Episode 4
What My Father Left Me
Episode 5
Proud Battlefield
Episode 6
White and Black Flash
Episode 7
Destined Confrontation
Episode 8
Dangerous Human Weapon. To the North
Episode 9
Violent Bombing of the Holy City
Episode 10
Clash of White and Black
Episode 11
Invasion
Episode 12
Black Howling
Episode 13
With the Heart of a Friend
Episode 14
The Temple of Moonlight
Episode 15
Ghost
Episode 16
An Attacker From the Past
Episode 17
Crimson
Episode 18
The Seventh Dawn
Episode 19
Fang, 2nd Generation
Episode 20
Darkness and Death
Episode 21
Cannon
Episode 22
Older Sister, Younger Brother
Episode 23
Prepare Yourself
Episode 24
Fist of God
Episode 25
Ying-style Demon
Episode 26
Path of a Sevaar