Cid never thought he would feel this way, his technique was so easy, he, as a supporting character, would declare himself to the girls and would be rejected, But that never really worked out, anyway, he always rejected it in the end. But there he was now, looking at you, you were just a supporting character, you were like any other student but he still liked you.

Incredibly, even though he continues with his plans and tasks, he continues to steal glances from you, he is neutral to physical beauty, Shadow Garden already has several beautiful girls after all, but he feels differently about you. As if you were unique.

SO, He mentally nicknamed you 'Dark Princess'! And he mentally invented that you were important to his story, even though you are oblivious to what he thinks in his Chunibyou mind

"Oh, sorry, I didn't see you around" he says when he accidentally bumps into you as the two of you walked to the Gymnasium to train your swordsmanship and fencing skills. He scratches the back of his neck, playing the role of an extra again while mentally thinking that this was a great attempt to get close to the 'Dark Princess'