Elf no Kuni no Kyuutei Madoushi ni Nareta no de Hime-sama ni Seiteki na Itazura o Shite Mita [ADV][Japanese]

Kisu (the main character), who became a hero in an elf territory that has little to do with humans due to a combination of coincidences and misunderstandings, was appointed as a court mage.

The king, who sees Keith as a powerful person, asks Nia, a princess who was born unable to use magic, to grant her magic.

Nia longs for Keith, the hero who is a cute only daughter who is loved by everyone, and grows closer to him.
Of course I have no doubts!
Keith pretends to be a treatment and makes her learn “Iku” and make her lick it with blindfolded twin tails.
Make an innocent princess scream dirty words, and even POV!
She doesn’t think it’s naughty at all, and she grows up to be his ideal filthy princess bitch.

Then, Aisha, the escort knight who learned of her princess’s foolishness, made a promise to Keith to protect Naia, but–