On Song Haitang's 17th birthday, she was accidentally bound to a heartbeat buff that was refreshed daily.
She would smile after looking at each other for three seconds, tell the truth when she was nervous, blush when she got close... All these strange and out-of-control reactions were only triggered by the same person - the cool, dazzling, top-achieving boy she had secretly liked for a long time - Lu Mingyu.
As a double academic at the top of her grade, she originally wanted to have a quiet crush and never cross the line. But Buff is different every day, and her little thoughts are clearly exposed.
She hid desperately for fear of being discovered by him and becoming the laughing stock of the whole school.
But little do they know that those sudden "special abilities" are never a coincidence.
He seemed cold and distant, but in fact he had quietly limited all exceptions and preferences to her.
From the secret glances in class, to the ambiguous tug and pull between desks; from the exciting little surprises that are refreshed every day, to the gentle truths revealed layer by layer.
This heartbeat was never a one-man show for her.
You are my daily limit and the only one for the rest of my life.
Go in both directions, sweet to the end, no abuse in the whole process, perfect HE!
