Thank you divisorer for pointing out my ability sequence problems. It has been remedied.

Vichoko: I got rid of the HP/Lvl Seals for AP Seals, but I like keeping my points in defense on Kennen. I guess it's personal preference, but I feel the extra durability helps a lot early game and carries through pretty well to late game. After the 10% magic pen, Kennen doesn't need much more from the Offensive Tree. Again this is my personal preference, thank you for your input.

Fix up your ability sequence, you have 6 points in shuriken and 4 points in electric surge.

This is how i usually play kennen. A good guide. +1

Good guide, but i think you are putting so much emphasis in defence, your masteries will work for a tank.
Your runes are okay, but i dont like them, i think early kennen need more ap.
I'll never chose flash and ghost, thats crazy.