The Blackan Lengip

* In order to survive the damage some of these bosses dish out, reallocating your stat points to all EARTH is a good idea to survive high damaging jutsus and criticals, as well as surviving a 5 turn stun from Byakko. All WIND element is just as useful, though there's always the chance that you'll still be hit for high damage. Having more attack power and no defense is useless in these fights as you'll most likely die before you can even take off half of the monster's health bar.
* STUNS NOW WORK ON WORLD BOSSES AS OF MAY 14, 2010! There's still a chance that they resist the stun, but at least free players are given a chance at the higher level World bosses!
* The overall best pet to use against World Bosses is Keiko, he restricts and burns. Other useful pets, in order of most useful to least, are; Tomaru, Leiko, Suzu/Inokuchi, Suki, and Eriko.
* Have a large stockpile of Healing scrolls with you, even if you're a water jutsu user. If you're a water jutsu user, consider adding 2 of the highest ranking Heal's available as well.

* Skills that cause; burn, poison, restriction, Stun and bleeding are highly effective in World boss fights. They help you take out the bosses quicker.

Skills that cause the burn affect are: Hellfire jutsu, Tomaru and the pet Keiko.
Skills that cause poison are: Leiko and the Blacksmith weapon Snake Soul.
Skills that cause stuns are; Earth strangle, head kick, Fat lady transformation, Sexy lady transformation, lightning shock, Suzu, and Inokuchi.
Skills that cause bleeding are: Blade of Wind, Wind edge chop, Moon cleave, and Wind blade extension.
Skills that cause restriction are: Water Bundle and the pet Keiko.

* If you're a lightning user, Lightning flash is a useful skill as well. It allows you to blind your opponent and gives you a high chance to take ZERO damage for 2 turns. Use it properly and you'll be able to dodge some of the more devastating attacks. Eriko can also blind as well, though at a much lower percentage of success.
* Spirit touch, Suki, Tomaru, and Golem protection can help reduce the amount of damage you take as well, effective in negating the high damaging attacks of some of these bosses.
* Feather illusion is great against Tengu. It allows only one monster to attack you for 3 turns, and your 3 man team will concentrate all their attacks on one monster. Sleep is unique in that during the 3 turns it's in effect, you cannot deal damage to that opponent. Doing so will wake him/her up! Status ailments like burn also wake up the opponent, so cast sleep when these are off!
* Evasion is a good skill to use for all Wind stat users. It'll give you about a 70% chance of dodging all attacks for 3 turns. If your opponent uses an AoE skill, it has to hit you in order to damage your friends, dodging it will negate ALL damage dealt to everyone.

* The World bosses seem to attack in a cycle (not random like recruit friends), though I might be wrong in this. They will always attack you in roughly the same attack pattern every fight. Fight them a few times to find out when they use their more devastating attacks, restart, and counter them with blinds, sleep, protection, or evasion.
* Use attack skills early and often. The World boss battles are going to take more turns then any other fight there is. The quicker you use your best skills, the quicker they'll cool down and you can use them again.

* RECRUIT FRIENDS!!! RECRUIT FRIENDS!!! I can't stress this enough, you'll do more damage per turn and you'll last longer in battle as well. If the World bosses don't use their AOE attacks, their single attacks might hit your friends, and not you. As long as you stay alive, the mission will continue. This will lead to the highest chance of success if you can find and recruit friends!
* If you've got a few spare tokens to waste at a low level, recruiting the NPCs would help you out with the level 10 World boss. NPC's are useless for any other boss though, and it's recommended to not even bother using NPC's unless you really want to beat Ginkotsu at around level 10-15. You're better off waiting until you're level 20.

Heres what you need
Emblem:yes

Stat:40 wind

Elements:Water,wind,fire

Jutsus:
Hellfire
Water Bundle
Evasion
Feather illusion
Refresh 4
Refresh 5
Wind blade extension
Moon cleave

Pet:Keiko(frog) or Leiko(snake)

Attack pattern
Evasion
Hellfire
attack
attack
Feather illusion
charge
charge
Water bundle
attack
attack
attack
Evasion
Hellfire
so on and so on...

If you dont believe count is yourself..Evasion's cooldown is 10 and as on every skill you need here..
Lets count

Attack pattern:
Evasion
Hellfire (1)
attack (2)
attack (3)
Feather illusion (4)
charge (5)
charge (6)
Water bundle (7)
attack (8)
attack (9)
attack (10) cooldown!
Evasion
Hellfire
so on and so on...

But he can attack you because water bundle lasts for 2 seconds..thats why you need refresh ^^ hope this helps