She came to a different place with her parents, met him at school, and fell deeply in love with him; but when she was about to confess, she was severely rejected.
Because he felt that she was unique in the school, he deliberately approached her, and then refused without hesitation when she was about to confess.
He has been protecting her from the beginning and just wants her to be happy, so that he feels very satisfied.
She sadly left his sight, ignored him, accepted her knight's love, and tried to fall in love with her knight.
He felt a little lonely when she left, but he didn't pay much attention. But when he saw her with a boy, jealousy and heartache overwhelmed his thoughts.
He cared for her when she was most sad, and told her his feelings under the torment of his heart, but he didn't want her to accept it happily. Although he understood that she was not sincere at the time, he believed that he would make her truly fall in love with him.