The strongest ninja in Konoha

Introduction: World War II is over, and Minato Namikaze has just prepared to take over as the Fourth Hokage. Suddenly, the "Netherworld" Blood Successor, which had been dormant for half a century since the Warring States Period, returned with force! What? Minato-sensei, do you think I, Reiji Hasegawa, can't defeat pigs and toads? How can it be! Emma! help! Teacher, you are trying to trick me, that long-nosed pig was raised by Danzo, and it has already led the ninjas from the roots to kill him! Also, my house has been overrun by a group of toads from Mt. Myoboku! Minato-sensei, tell me, what use can I, a blood-successor who can only swat flies and catch monsters, do? What? There are also beautiful cute girls among monsters? Where is the fox sister with nine tails on the opposite side? Watch me slay demons! Minato: &...