Youth Never Returns

A university swimmer's sudden death sparks suspicions among classmates, leading her friend and rival to uncover chilling secrets lurking beneath the surface; A young man's infatuation with a nearby sculptor takes a sinister turn as he delves deeper into her world, revealing unsettling truths; An editor's pursuit of romance with his assistant turns perilous when a series of accidents, linked to mysterious wishing sheets, haunt him and his friends.

An Ran, a music teacher, and Song En, a boxer, both teach at the same remote water school at different times. Through a magical diary, they begin an unexpected connection, leading to a blossoming romance.