Untruth Arc

The Untruth Arc is the thirteenth arc of the Undead Unluck manga series. It deals with the Union entering a tournament called "Tenraisai" at the request of Mei to save her older brother, Shen, from fighting to the death against his mentor Feng.

Synopsis
Now in Hong Long after crashing down from the New Feeling space station, the Union members prepare to head home with Phil and his mom in tow. However, a hooded person attacks Fuuko but is quickly subdued. The attacker turns out to be Mei, Shen's young sister, who wants the Union to enter a martial arts tournament called "Tenraisai" to save him from fighting his master, Feng, to death.

Fuuko, along with Void, Yusai, Billy, infiltrate the tournament, only to immediately out themselves by taking out all their opponents at once. Feng attempts to fight Fuuko again, as per the agreement made in 1973, only for Shen to get in the way. Working together, Fuuko and Shen manage to stop the same attack that killed him in the pervious loop. After seeing Fuuko's Union, Feng then backs off, wanting to fight Fuuko in the finals. However, Fuuko states it will be Shen, her master and his disciple, will be the one who defeats him. Afterwards, Shen and the Union meet with Mei, and Fuuko tells them both of the loops, and asks if Shen knows Mui. While Shen does not believes Fuuko's words, he does believe in her strength, and agrees with her plan to make him stronger. Shaking hands, he's unknowingly imbued with Unluck, causing his bracket to be everyone in the Union.

Shen then goes on to take on the Union one by one, over coming their negator abilities and becoming stronger as a result. Meanwhile, Fuuko kidnaps Mei and has her next to Feng so she can be safe when Shen's tragedy hits. Conversing with Feng, Fuuko learns the real reason Shen entered Tenraisai was to prevent Mui from fighting Feng, as the prize was a medicine to save her little brother. After confirming Shen's feelings, Fuuko then willingly disqualify herself, allowing Shen and Mui to fight before Feng. During the fight, Shen's Untruth manifests and causes Mui to be punched out of ring and over the mountain the tournament is taking place in. The Union and Feng help Shen save Mui, and afterwards, Shen and Feng finally fight each other.

Feng's past in the 101st loop is then revealed; once a street urchin who attacked others, he defeated a martial artist who tried to reform him, and attacked the martial artist's school to become stronger. However, just before leaving the school, Feng's Unfade awakened and made it so he could only watch as promising fighters grew old and left him alone. Shen eventually wins using a dangerous technique to knock Feng out of the ring, and Untruth to keep him pinned, as Shen does not hate him in this loop. Shen then passes out, but wakes up thanks to be given half of the prize medicine (the other half was given to Mui little brother and the Union is watching over him so he gets better). Feng prepares to leave now that his business with Shen is over, but Fuuko convinces him to stay by talking about "dangerous quests", stroking his desire to fight. At the Union base, another mission is then given out by Fuuko requiring 10 people; Sean, Gina, Billy, Isshin, Shen, Mui, Nico, Ichico, and herself, and Feng. It turns out the "mission" is in fact hijacking the school Chikara goes to to stop his tragedy of accidentally killing his parents. Everyone is given roles, and Feng can only curse Fuuko for setting him up as the Union leader apologizes for tricking him.