Sei Shori Hakudaku Princess ~Oukyuu Katei Kyoushi no Oshioki Lesson~

The protagonist is appointed the position of royal tutor. He falls in love with his pupil, the haughty but pretty princess Supika.
He realizes their social standing makes his love impossible, but he wants to at least tell her his feelings. He decides to write her a love letter.
A few days later, in front of a group of people that gathered in the palace, the princess reads aloud the letter.
She then tears up the letter, telling him not to be a damn fool.
Shamed and angered, the protagonist sets out to take revenge...