Yu (Rei Gaiden)

Yuu (ユウ, Yū)appears in Rei Gaiden as a young girl who meets Rei on his journey. She originally diguises herself as a boy and pretends to be a master of Nanto Seiken, donning a girl "disguise" on top of that to lure bandits in and steal their supplies (something Rei later adopts at a much more subliminal level at his introduction in Hokuto no Ken). After Rei saves her from bandits with his Nanto Suichō Ken, she agrees to take him to Asgarzul in his search for Airi. When she was young, Yuu's mother died in the desert during their journey to Asgarzul and she was adopted by Eva. She often distanced herself from her sister's ways, however, only growing to adopt them after Eva's death.

Yuu
Yuu, as she appears in Rei Gaiden.
Name in Kanji	ユウ
Name in Romaji	Yū
Alternate spelling(s)	Yu
Fighting Style	Wrist-mounted crossbow
Allegiance(s)	Eva, Rei
Family	Eva (adoptive older sister)
Position(s)	Mercenary, Princess of Asgarzul
Appearances	Rei Gaiden

Following Eva's death, Yuu later became the new queen of Asgarzul and played a key role in the final battle between Rei and Rofu. Afterwards, she bid farewell to Rei and remained in the city.

Trivia

• Yuu's tactic of donning a female disguise to attack bandits and steal their supplies is a direct reference to Rei's introduction in Hokuto no Ken, and likely serves as inspiration for Rei after the events of Rei Gaiden.

• 

  Young Yū

• 

  Yū as the Queen of Asgarzul