chapter 1:The kyuubi vs minato and an unknown hero

it's The night of the kyuubi attack and Minato namikaze. fourth hokage of konoha was about to battle the tailed beast in combat but suddenly a strange figure appears and knocks minato namikaze out cold. using nothing but a book and a pen and paper. he defeats The kyuubi and saved konoha. who is this mysterious Man and what did he have to gain by saving The village???

let's start The story and find out.