Yukiya Reizen is the third romanceable character from The Tower of Sorrow Mystery Series and a student at Gedonelune Royal Magic Academy.

Yukiya is originally from a small village, and grew up as the eldest of seven children in a large but tight-knit family. One day, Yukiya's village was attacked by raiders. Yukiya returned home from an errand in time to find them threatening to kill his parents and siblings.

Yukiya is initially quiet and unexpressive, to the point of appearing cold.