Eren Jaeger Titan

So my laptop screen cracked... IT WAS AN ACCIDENT I SWEAR!  I've kinda been really bored without it   That was until I drew this MASTERPIECE!  All I used was a HB pencil, rubber and a sharpener. It took me 4 days to complete! Hopefully the lazy tech guys have finally decided to START to fix it! It broke a week ago and there like "It will be ready in a couple days" THAT WAS ALMOST A WEEK AGO  
Hopefully the steam actually looks like steam... and the picture is meant to represent chaos & rage... Does it look chaotic?  
 I have over 1,000 messages to look at... 
No stealing! And don't use without my permission!
Eren and anyting to do with Attack On Titan belongs to Hajime Isayama...
Actually I have a question
If Attack on Titan belongs to Mr Isayama then why have people who create manga's like "Attack on titan, No regrets" or "Attack on Titan, junior high" or "Attack on titan, before the fall"  not been sued yet? I'm not judging the books cause I haven't read them.. But why? Other people are getting money because of his idea? It doesn't make sense to me...  And with the "No regrets one that is centered around Levi, what if the original author has something planned for him and this story contradicts it?