Although he couldn't find evidence right away,
Frederick had already picked up on some clues...
— This "Justus" didn't seem like Justus himself.
He knew Justus very well, perhaps even better than his own parents did.
Justus was a very pure person. He was self-centered and possessed a strong greed—not for material things, but for emotional ones. In other words, he treasured and valued every one of his relationships immensely.
Whether it was his friendships, his secret love for Ingrid, or his respect for Professor Gray, he would go to any lengths to protect those feelings.
Yes.
Justus was the type of person who would kill for a friend or a lover.
This, of course, included those who showed hostility or wickedness toward his friends or lovers... If someone tried to hurt them, he would be the first to rush forward; but if he experienced betrayal, he might also turn around and kill his friend or lover.