Kagura Hikaru could understand people's hearts, yet he wasn't good at handling interpersonal relationships—as one could see from his interactions with Kiryu Hina.
But the good news was that he was sufficiently introverted and knew how to enjoy solitude; even without friends, even if no one spoke to him, he still managed to live contentedly.
This was also why, although he could have deceived Ruzaki Mami and secretly handled the matter, he chose to remain 'honest,' the core reason being that he wasn't afraid of being disliked.
Indeed, he had come to solve a problem, not to make enemies.
So his promise to Ruzaki Mami was genuine; Kagura Hikaru would ensure that when the truth came out, the innocent wouldn't get hurt.
Ironically, this 'Teacher Sato,' despite being the central figure in the entire blackmail incident, had yet to be seen.
Previously, he hadn't cared, but now he couldn't help but want to know more about him.
