Challenge...
Ansatsu kyoushitsu cross fairy tail...
God of death, its a name that given to a person that bring death to more than thousand people. He kill people no matter they are kid, woman, oldman, magician, knight, ordinary people or leader of country. If he asked to he will do it, as if "kill" its the only word he know and he familiar with it. He kill a lot people until finaly they give him the name the god of death, the bringer of chaos.
No one know his face or his appearance. He like ghost, that you cant touch...
He become terror in more than 100 year, 400 year ago...
Until he is gone without trace or deadbody...
No one know how and why he is gone, he just dissapear like ghost and leave a lot question behind it...
Now in year 876 in magnolia, some weird yellow octopus monster has appear and save read haired girl that he meets in some beach. Bring her to fairy tail like she asked, that octopus meet makarov that asked him to join his guild along with the girl.
Have no other choice, that octopus join the guild just to let the girl in...
"Now, mind if you tell me your name mister octopus-san. We cant call you octopus forever you know." Ask the guild master asking the name of this yellow tentakel monster.
"Name?" ask back the yellow monster with wide smile on his face. "You can call me koro-sensei, if you please." Said the tentakel monster with happy face that have wide smile.
End...
Thats it, anyone can do it? Im to lazy(and im not good in english only at read it) to continue it(and i have no beta reader or translator=3=), but im sure it will be good fic. Where koro-sensei watching all people of fairy tail and help them grow and become stronger. No change in plot, same with manga and anime of fairy tail. But, its have few point where is koro-sensei advice help ^^.
If you want to take idea please PM me...
And by the way, for pair you i leave it to your imagination. It can be erza, mirajane, or anyone is up to you and your imagination...
And this bio of koro-sensei :
Name : korosanai-sensei.
Age : ? (rumor said more than 400 year)
Power : speed acceleration up to more than 20 mach, beam from his tentakel, regeneration, elastic body, usefull tentakel, and a lot more...
Like : boobs, good people, something sweet.
Hate : transportion, bad people, getting wet, ghost, wire puzzle, and list still go on...