Elf no Kuni no Kyuutei Madoushi ni Nareta no de Hime-sama ni Seiteki na Itazura o Shite Mita | エルフの国の宮廷魔導師になれたので姫様に性的な悪戯をしてみた

Keith (the main character) has become a hero in the elven realm, which has little to do with humans due to a series of coincidences and misunderstandings, and he is appointed as a court mage in no time at all.

The king, who sees Keith as a powerful man, asks him to give magic to his daughter, Naiya, a princess who was born unable to use magic. Naiya is a lovely only daughter who is loved by everyone. Of course shd don't doubt you! Keith does whatever he wants to do, including making her learn to "cum" while pretending it's therapy and making her perk up with blindfolded twin-tails. He makes the innocent princess scream lewd words and even fucks her! She doesn't think it's naughty at all and she grows up to be his only ideal flirtatious princess bitch.

And Aisha, a knight escort who has learned of the princess's lasciviousness, makes a promise to Keith in order to protect Naia...