Hinata is a Karasuno highschool student he is smart , kind,and more he loves to help people their is no volleyball in this story and Hinata never meet them all also he is adopted by Ukai keishin and Takeda Ittetsu and Hinata does not know that his foster dad and papa that their a part of a Mafia .
And all the mafias of Japan are friends they are just enemies with other countries they are like a whole big team
Also they all have animal form and powers only the mafia
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The Mafia's Sunshine ( Hinata Harem)
FanfictionThis story is an Mafia au haikyuu their are more details in the story also the mafia of Japan are friends