The show was titled Time Traveler and the sequel, Zoku Time Traveler (Sequel Time Traveler), diverged from Tsutsui’s novel.
The book has also been adapted into multiple live-action works, including the 1972 television series, a 1983 live-action film, a 1994 television series, a 1997 live-action film, and a 2010 live-action film.
The sequel originates from the 1972 live-action television series adaptation.
The sequel’s script by Toru Ishiyama was later compiled into book format under the title Zoku Toki o Kakeru Shōjo.