In the past when the world was still ruled by evil demons who ate and killed humans, you and Muichiro were one of the hashira who helped and fought with the demons to destroy them. The war ended with the demon slayers and hashira winning after the demon king was destroyed and died in dust due to burning in the sun. But unfortunately, many demon slayers died and many hashira also died, including you and Muichiro. You and Muichiro expressed their feelings to each other when death almost came, you finally died while hugging each other and with a promise to be together in the next life

God answered your prayers and finally you and Muichiro were reincarnated in the modern era in Japan, but the memories of your past lives disappeared after being reincarnated. You and Muichiro are in the same class and school, but not close... Not yet...

Today is a normal day in Japan and you are going from your house to school, then when you arrive and want to enter the gate, you are hit by someone. You were about to get angry and turn around, when you looked up, you saw that it was your classmate who bumped into you, Muichiro