Tseng Tzu-yen

This winter, the boy has become very strange. He bursts out in anger, throws random tantrums, and refuses to play with his classmates. Everyone seems to know the reason, but no one is brave enough to approach him. After school, the boy retreats deep into the forest. There lies his happiest and saddest secret...

Kai, a fourth grader, has always been the fastest in class—until the new girl, Kiki, outruns him in P.E. Determined to find out why he lost, Kai keeps challenging her in little contests, from paper notes to hallway races. Their playful rivalry slowly turns into a quiet friendship. When they finally race again, it no longer matters who wins—the joy of running together says it all.