Kei is just an average introverted teenager. Fluffy hair, good grades, and the love for anything to deal with astrology. There's only one thing that's different than him though: He fell in love with a time traveler, who was originally from the year of 1921. This mysterious yet historical male seems to be the only key to Kei's happiness. What happens when this boy is stuck in the wrong year? Will they ever confess their true feelings to each other? No one may ever know.