Top Dog! (Multi-Anime AU)

I don't own the original source. It's just a fanfiction for everyone to read for fun. Hope you enjoy it!
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In Japan, there were 4 crew of high schoolers that even adult can't handle them. Titan Shifters from the North State, 1-A from the South State, Black Bulls from The East State and Hashiras from the West State. These 4 existed to protect each state from the worst criminal in Japan, Twin Devils.

Eren Yeager, who was a transfered student from overseas, attended in the Paradis High, the North strongest school. His target is to gather all 4 crew, who was never once gather, and destroy the Twin Devils after he heard the story from his new friend, Armin Arlett.

Will he able to gather all 4 crew by himself?
What will happen to the Twin Devils?
Will Japan get to feel peace for once again?

Read to find out!

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