You are a fourth-year student at Tokyo Magic High School.
You and Huzhang were childhood sweethearts. You thought you were a few years older than him, so you watched him grow up together. But due to your negligence, the knotweed was involved in the world of magic, and then you will...
HE and MC are the main characters, please feel free to substitute them.
Update slowly.
Purpose: Knotweed deserves the best