"Passage to Tokyo" is the second volume of the "Ancestor Memories" series, taking readers into historical Japan of the 1920s. The protagonist, Yui Sanada, finds herself in a challenging situation as she tries to raise her younger brother Hiro while dealing with the struggles of their alcoholic mother. A trip to Ueno Park leads Hiro into a mysterious tunnel beneath a samurai monument, and Yui follows him into another time. Suddenly, she is in the year 1923, just before the devastating Kanto earthquake that will bring the city to ruin. As she tries to find her brother, she develops a deep bond with Chiyo, a young woman who helps her navigate this new world. Yui faces the challenge of saving her family and the people she loves from the impending disaster. This gripping story weaves historical events with fantastical elements and explores the strength of family and friendship in difficult times.