Also known as "All About My Wife"
His wife died unexpectedly, and sleeping pills, hallucinogens, and antidepressants were detected in her blood, which had always been cheerful. I wanted to use a time machine to go back to the husband who was seventeen days before his wife's death, but accidentally returned to seventeen years ago. Returning to his student days, he met and fell in love with his wife again, but a secret about his wife was revealed.
Ps: It's not scary or suspenseful, it's just a love story; it contains slight blunders, so if you don't like it, please steer clear.