This is a karakura town mission, here is your brief:(credits to chickenboy)

MISSION BRIEF
Several espada level arrancar have come to Karakura town with the intent of exterminating all shinigami they see, they have told us that if no shinigami come, then they will start to kill humans. We need you to go and kill thoses espada. If you are an arrancar, you musy exterminate all shinigami that oppose you.


RULES
You may choose to be an arrancar instead of a shinigami, or an arrancar may choose to be a shinigami instead of an arrancar, you may also be both.

Bankai:
5th seat and up may have bankai, but because we do not want to cause too much colateral damage you may only have it for 7 posts

Shikai:
seats 20-15 may have it for 3 posts
seats 14 -9 can have it for 6 posts
seats 9-6 may have it for 9 postst
seats 5-taicho may have it for an unlimited amount of posts

Release: [arrancar only]
To be fair, if shinigamis want to be arrancar too...we will decide arrancar ranks first come 1st serve as in say someone was the 5th arrancar to appear, they would be ranked: 5
Release state: 10-8 may use for 3 posts 7-4 may use for 6 posts 4-1 may use for an unlimited amount of posts

Shinigami:
1.Takimoto-kun
2.Seraphim
3.War_makes_me_happy
4.kenTakeo
5.Grimmjow the glorious
6.squee bly
7.suzaku
8.Ryuhi Cantin
9.
10.

Arrancar:
1. Hiro
2.Seraphim
3.squee bly
4.cool beans
5.suzaku
6.[optional from here on out]
7.
8.
9.
10.
All Arracnars come with a standard issue full recovery kit

All Shinigami come with a standard full reiatsu kit