Guardian of the Atobe Family

Nana, a person who lived a thousand years later, accidentally fell into the time tunnel and came to Japan in the Edo period. By coincidence, she became the guardian of the Atobe family. Hundreds of years later, the young Atobe Keigo accidentally discovered Nana sleeping in a crystal coffin in the secret room of his old house. When Nana wakes up again, and when Keigo grows up, the story between them begins...