Endless Sea - Season 1

Yi Ran, the heiress of a martial arts school, finds herself mysteriously trapped in a time loop, reliving May 18th over and over again. In her search for a way out, she turns to Cheng Nuo, a digital restorer of ancient artifacts linked to the phenomenon. But when he too becomes ensnared in the loop, the two discover that the truth behind their endless day is bound to a fate they share.