Shape Moon: at the Beginning of the Fourth Battle, Polygonum Cuspidatum Youren Ginseng Is On

Knotweed Hisahito accidentally woke up in "Fuyuki City" in a different world. A world without cursed spirits, but with magic and the Holy Grail War. He became an elementary school teacher and served as a first-grade class teacher at Fuyuki Municipal Minami Elementary School. Among them was a special girl named Tohsaka Rin who liked to pester him and listen to his stories every day. The two gradually established the bond of being both teachers and friends during their chats after school. The Fourth Holy Grail War is approaching, and Tohsaka Rin tells the secret of his father Tohsaka Tokiomi's upcoming participation in the war to Kozada Hisuhito. Seven Masters, seven Heroic Spirits, and a cruel rule that there must be casualties. All this made it impossible for Hishito Kozada, who had experienced the Shibuya Incident and the Return of Death, to sit idly by. He decided to intervene and end the war, not for the Holy Grail, but to prevent the sacrifice of innocent people. How will the magician who once guarded everything with his fists carry out his beliefs in his own way on this unfamiliar battlefield?