Ankoku Kishi no Ore Desu ga Saikyou no Paladin wo Mezashimasu

Kai is from a family known for dark-style roles and desires more power. After rescuing the fourth royal princess from monsters, he gains entry to an academy for holy vocation training. Despite his body struggling with the intense regimen, he pushes through to become the opposite of a top dark knight—the Kingdom's premier holy royal knight, the Royal Paladin. His journey to change vocations begins with a challenge: "Now let us enjoy our deathmatch—to our hearts' content."