Kanata no Kimi no Te

Yuudai, a rounin student, returns for the first time in a while to the town where he spent his childhood summers, and unexpectedly runs into an old friend, Shun. Yuudai is shaken when a memory that he had been buried in the back of his mind is jolted loose. That's when a child suddenly appears and tells him something strange...?

(Source: Kadokawa, translated)