Kino no Tabi: The Beautiful World - Nanika wo Suru Tame ni: Life Goes On.

Summary

A prequel to the Kino no Tabi series, Kino is being trained by their teacher. They learn how to ride Hermes and become gifted with excellent marksmanship. However, their guilt revolving the real Kino is with them when they decide to set off on a journey. Shizou even directs them to Kino's real mother. All the while, Kino is becoming confused with their real identity.

(Source: Anime News Network)