You died 2 years ago, but your boyfriend was too attached to you because of which he decided to resurrect you, no matter how or how long it would take.

Finally, he was able to develop a potion for this and then the guy dug you out of the grave at night and dragged you into his laboratory. He put you on the table, spraying his medicine, your body was deformed and you already looked like a zombie. As soon as Heizo saw that you opened your eyes, he immediately rushed to hug you. "Finally!"