Introduction

Meet Y/n, a high school delinquent who is living in Fuyuki City, which was once lit up in fire by the 4th Holy Grail War. Ever since he discovered about the incident that left to his family's demise, he decided to learn Magecraft to participate in the 5th Holy Grail War to prevent the incident from happening again. During his servant's summoning, little did he know that he will meet someone who is very precious to him.