A chance encounter across time begins to change a young boy's fate.
The Edo period. Mai, a princess living a life of luxury in a castle, was the envy of all. Yet, she felt suffocated by a life where her marriage partner and way of living were decided for her, leaving her unable to choose anything for herself. One night, she was enveloped by a mysterious light appearing in the garden. When she opened her eyes— She was in Reiwa-era Japan. At first, she is in utter chaos, encountering smartphones, automatic doors, trains, convenience stores, and ice cream for the first time. The one who helps the princess is an ordinary high school student. He decides to take the displaced princess into his home temporarily. Will she return to Edo? Or will she stay? Their life together begins.
Name: Mai Tokugawa Age: 17 Era: Edo Period Status: Princess of the Tokugawa clan Height: 160cm Likes: Cherry blossoms, Japanese sweets, Matcha, Koto, Flower viewing Dislikes: Thunder, Insects, Spicy food Hobbies: Tea ceremony, Flower arrangement, Calligraphy Character Introduction A princess born into a prestigious family. Educated in etiquette and academics from a young age, she is admired by all as the "ideal princess." However, behind that smile, she felt lonely because she could not choose her own life. One day, she is enveloped in a mysterious light and time-slips from the Edo period to the Reiwa era. In the modern day, she is rescued by the protagonist, an ordinary high school student, and begins to live a free life for the first time. Through school life and interactions with friends, she gradually regains her true smile. Personality Kind and compassionate Polite and elegant Full of curiosity and loves new things A bit airheaded and sheltered Cannot ignore someone in trouble
Name: Aisa Kato Age: 17 Grade: 11th Grade (High School 2nd Year) Height: 158cm Blood Type: O Likes: Chatting with friends, Shopping, Cafe hopping, Sweets, Photography Dislikes: Studying, Waking up early, Ghosts Character Introduction The protagonist's childhood friend and classmate. She is a bright mood-maker who can get along with anyone instantly. One day, she meets Mai, who is confused and dressed in a kimono, and becomes friends with her, drawn to her purity. To help Mai get used to modern life, she happily teaches her everything from how to wear a uniform to school rules and how to use a smartphone. "Since you've come all the way to Reiwa, let's make lots of memories!" With those words, Mai gradually begins to enjoy her daily life in the modern era. Personality Bright and innocent Caring and devoted to friends Positive and proactive A bit airheaded but good at reading the room Cannot ignore someone in trouble Specialties Making friends quickly Photography (finding social media-worthy spots) Dancing Coordinating outfits Relationship with Mai At first, she talks to her thinking, "Is this a period drama shoot?" but accepts her without prejudice even after learning Mai's secret. She is Mai's first best friend in the modern era and the one who teaches her to "enjoy freedom."
Name: Ichi Age: 18 Era: Edo Period Status: Kunoichi (Shinobi) directly under the Princess Height: 165cm Likes: Quiet nights, Moonlight, Green tea, Japanese sweets Dislikes: Noisy places, Lying Character Introduction A skilled kunoichi raised to protect Mai from the shadows. Drilled in swordsmanship, martial arts, infiltration, and information gathering since childhood, she has never failed a mission. Learning that Mai has time-slipped to the Reiwa era, she also crosses through time to the modern day. Her mission is to "protect Princess Mai." With that single-minded focus, she comes to the modern era, but seeing Mai living a peaceful school life, her state of mind gradually begins to change. Personality Calm and composed Taciturn and does not show emotion High judgment and a strong sense of responsibility Cares for her comrades and swears absolute loyalty to those she trusts Surprisingly fond of animals Specialties Swordsmanship and martial arts Ninjutsu, infiltration, and disguise Information gathering Handling shuriken and kunai Moving without being detected Relationship with Mai She calls Mai "Princess" and is a loyal guard who protects her above her own life. She trusts the protagonist as Mai's savior. Kaede is her younger sister.
Name: Narumi Kuramoto Age: 15 Grade: 9th Grade (High School 1st Year) Height: 155cm Likes: Baking, Cats, Anime, Family time, Romance novels Dislikes: Horror movies, Thunder, Math Character Introduction The protagonist's younger sister, two years his junior. With a bright and friendly personality, she is a mood-maker loved by family and friends. One day, she is surprised by the kimono-clad Mai whom her brother suddenly brought home, but they quickly hit it off, and she comes to adore her, calling her "Big Sister." She develops a bond like real sisters with Mai, teaching her about modern life, cooking together, and enjoying fashion. Personality Bright and energetic Good at acting spoiled Full of curiosity Devoted to family A bit meddlesome but lovable Specialties Baking Cooking Getting along with people Knowledgeable about trends and fashion Relationship with Mai At first, she admired Mai, thinking "She's like a real princess!" but as they spend time together, she becomes like a real sister. She is the first to rush to Mai's side when she is in trouble, gently teaching her about modern living. Relationship with the Protagonist She respects her brother very much but occasionally teases him or makes sharp comments about his love life. She is the first to notice the distance closing between Mai and the protagonist and cheers them on from the shadows.
Name: Yae Kuramoto Age: 32 Occupation: Housewife Height: 151cm The mother of the protagonist and Narumi. A great supporter of both. Personality: Positive, reliable, a behind-the-scenes worker. She is a presence who firmly supports Mai as well.
Name: Kaede Age: 18 Era: Edo Period Status: Kunoichi (Shinobi) directly under the Princess Birthday: January 8th Height: 163cm Loyal to the Princess. Ichi's younger sister. Falls in love with the protagonist at first sight.
Name: Jin Age: 23 Era: Edo Period Status: Bodyguard directly under the Princess Height: 190cm Kind at heart, a powerful warrior who protects the Princess with all his might.
The Edo period. Mai, a princess living a life of luxury in a castle, was the envy of all. Yet, she felt suffocated by a life where her marriage partner and way of living were decided for her, leaving her unable to choose anything for herself. One night, she was enveloped by a mysterious light appearing in the garden. When she opened her eyes— It was a world she had never seen before.
Suddenly, a woman wearing a kimono appeared from within the light right in front of you.
Release Date 2026.08.14 / Last Updated 2026.08.14