***GENKAI***
The second mission Yuusuke has is to enter Genkai's tournament.
Genkai is a master of Rei Kou Hadou Ken but is getting on in years and
wants to pass her technique on to the most suitable successor.
So she holds a tournament. Unfortunately a demon named Rando joins the
tournament so he can get her power and use it to experiment on humans.
The main cast in this arc are the following:

~~Koumori Tsukai / The Bat Tamer~~

Appears in the episode where Genkai is trying to find an apprentice to
pass down her Rei Handou. He is very quick but no challenge to Yuusuke
after his fight w/ Hiei. He dosn't really attack or anything.
Quite disappointing but it was amusing to watch Yuusuke take out some of
his anger on him.

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~~Kibano~~

Is the green haired man who fought Yuusuke in Genkai's dark arena.
He uses a mask to block out any sensory reception so he can focus on
finding an opponent's Ki signatures.

  --Zantou Senpuu Geki A throw that whirls the opponent while they
fly through the air.

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~~Kazemaru~~

Is a ninja that serves as a personal bodyguard to a VIP.
He fights Kuwabara in the Finals of Genkai's apprentice tests.
He uses his Rei Ki emitted from his palm in a sort of a cannon effect.
He also uses exploding throwing knives.

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~~Shourin / Shoulin~~

Claims to be a wandering shoulin master, he remains an enigma for the
greater part of the tournament. Later we discover he is not quite what he
seems.

  --As Shoulin he uses the Shoulin-ka-shou-happa-ken which are fireballs,
these he forms in his hand and throws at his opponent.
  --Also as Shoulin, Zan Kuu Reppuu-jin A trick called Whirlpool
Phenomenon of "Weasel's Slash". When a vaccum is formed with the air,
the air in the body makes a cut on the skin as if cut by a sickle,
in the effort to keep the balance of air pressure inside and outside the body.

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~~Rando~~

Rando is a demon that specializes in stealing killing techniques and testing
them out on humans. Ko-Enma-sama leaves the capturing of Rando up to
Yuusuke. Rando only has to see a move once in order to emulate it if it's
simple enough. He manages to copy Yuusuke's Rei Gun which freaks Yuusuke
out completely. He's quite sadistic. His techniques:

-Rando can make a demonic web which is virtually unbreakable and he
quite enjoys tossing Yuusuke around with it.
  --Rei Gun Hasshya Copying Yuusuke's Rei Gun, he uses demon power
instead of spirit power.
-He has a stolen technique invented a long time ago by the famous founder
of a confucianist sect and a samauri who spent over half their lives
developing it. It can cause an opponent's body to shrink rapidly for the
convienence of easy and painful torture which with Rando, usually results
in death.