Because he was unable to change the world. He was merely a bug in the gutter.
Before that inevitable day arrived, Ultramarine killed Glass — to save the "innocent people."
Even though Mark sneered at those innocent people, he also thought... if Glass could know that her shattered death could trade for the lives of so many innocents, she would probably smile.
Because she was indeed such a gentle person.
...For some reason.
When he saw the Hairdresser from Fujishe, he vaguely saw something unique to Glass in that man.
Although the hair color, height, gender, age, prone-spiritual, and voice were all completely different... there was still a strange feeling of similarity.
Especially that slightly cunning yet convincing smile that could empower others, it was just too similar.
And his words, they resonated and agreed with Mark like a song of Glass —
"All those who truly need help from Fujishe won't believe the grand talks of those orators."
