share time: 2026-01-24 00:30:49
Lin Xiaoman, 30, finds an unsent love letter from high school while sorting old items—it’s her secret crush on Gu Chuan, which she hid at the bottom of her drawer back then for fear of being mocked. That night, she accidentally travels back to the summer of 2013, standing under the sycamore tree on her high school playground, watching 17-year-old Gu Chuan shoot hoops. Determined to be brave, she hands over the letter—only to find Gu Chuan clutching a similarly crumpled note: he’d also written a love letter but chickened out after seeing Xiaoman laughing with a male classmate. They clear up the misunderstanding, but a “7-day countdown” suddenly appears on Xiaoman’s wrist—she only has a week here. Should she rush into love, or help Gu Chuan make up for the basketball final he missed (because he took care of sick her back then)? On the last day, Gu Chuan walks over with the championship trophy, and Xiaoman finally realizes: “No regrets” isn’t about changing the past—it’s about daring to tell her younger self, “I didn’t lose.” Back in reality, she meets Gu Chuan (who’s there for a business collaboration) downstairs from her company—he’s still holding the glass marble from 13 years ago, smiling: “I’ve been looking for you for 13 years.”
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