Oshiete Very Short

During a seaside swimming lesson, a panicked student loses her kickboard and frantically grabs hold of her instructor, leading to a chain of events that leaves him unconscious. When he wakes up on the shore, he is surprised to hear that the student saved his life.

The instructor's relief is short-lived, as the student offers to teach him something else in return for his lessons, setting the stage for an unexpected and intimate exchange between them.