Imagine Shaman King if it skewed a little older and without the
Shamans, and The Law of Ueki begins to come into focus. Ueki is
pretty much your average, everyday, spiky-green-haired junior high
school student, apart from the fact that he can grow trees out of
the palms of his hands from the smallest bit of trash. An ability
he didnt so much ask for as have cast upon him by his wacky
teacher Mr. K, whos recruiting students he feels have the resolve
to win the Battle of Supernatural Powers a.k.a. Celestial King
title.
Whoever wins will be granted The Power of Blank (as in whatever
power he or she can dream up, viola!Its the Stay Puft Marshmallow
Man all over again) but more importantly (to Mr. K at least)
whoever bestows the winning spell will become king of the celestial
world... And Mr. K wants to be kingbadly. Save it to say that
either way its imperative that the winner be a mild-mannered sort.
Should the power fall into the wrong hands the results would be
disastrous.
Luckily (or not depending on how you look at it) one of Uekis
classmates, Ai Mori, witnesses his secret power and (now that shes
confident hes not an alien) has taken to defending him. But shell
have to break free from the power to make someone ugly by sticking
his fingers up their nostrils power first. Its all downhill from
there. Not.

Official Website: http://www.tv-tokyo.co.jp/anime/ueki/
The anime ends at episode 51. Not bad, I like the fights and chars
are funny. Mori's fight at the later part are.. uber uber uber
lame. -.-uuu
I'd love to spoil more but.. NEVER!