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Traveling through parallel time and space in Tokyo, Natsuhiko Hiiragi encounters a charming young woman When she gave it to his best friend, he never imagined that he would see this scene in the future: "I have a best friend who wants to join our wedding..." Natsuhiko Hiiragi opened the door and was greeted by the girls in the hall. The charming young woman, the innocent school beauty, the quirky little devil senior... They were wearing different styles of wedding dresses, but they all asked the same question: "Xia Yan, which room will you sleep in tonight?"

Upstairs is a charming hottie who can make people fall in love with just a move of her fingers; Downstairs are the children whose time has been suspended. In the frozen time, they can move freely without restraint; Behind is the senior sister holding a collar. Once the contract is signed and the inscription is engraved, she will never be able to resist; As for Azusagawa Natsuhiko, he was just an ordinary time traveler who came to Tokyo by chance. So, his choice is... The girl stood under Tokyo Tower, the lights were bright, and the night was like a dream, looking at Natsuhiko Azusagawa with a sweet smile. "Xia Yan, I know what your super power is." "What ability is it?" "The ability to make me fall in love with you."