Rain Gaiden - Vampire Masterレイン外伝ーヴァンパイア・マスターー ; Rain Ex - The Vampire Master ; Rain Side Story - The Vampire Master

A tale from Rain's younger days when he was searching for a new teacher: Upon the death of his old master, a young swordsman embarks on a journey to the legendary Country of the Mist where the one he was recommended to is said to reside.