ケッセルリンク

Kesselring is an Elite Dark Lord affiliated with the Kayblis Faction. Prior to becoming a Dark Lord, Kesselring was a talented warrior of the all-female Kalar race. In the year SS0420, he was approached by the then-current Demon King Ssulal. Unusually weak for a Demon King, Ssulal desired to create a powerful Dark Lord who would serve as her protector, and requested for Kesselring to fulfill the role. Sympathizing with the Demon King, Kesselring agreed, promising to become a knight who would protect Ssulal at all costs. Upon becoming a Dark Lord, Kesselring’s body became male, seemingly as a result of his strong desire to keep his new master safe. [From AliceSoft Wiki]