Despite the fact that the investigators don't like Keon to be their supervisor, since the Emperor insisted on it, their wants aren't needed
At the end of the day, although they gained more power than their low title has, it was all because of the Emperor's favor. Without it, they would return to being powerless
As Keon already got what he wanted, he decided to head back to the Ybra Manor. He didn't bother speaking with his father anymore although that man helps him
However, in Keon's eyes, even if Javier were to sacrifice the whole world for him, that was already too late
Keon had already lived decades of his life in misery. The pain and trauma that he gained in those times would still be there no matter how repentant his father becomes
As Keon is not the type of person to really forgive people, he doesn't feel any better. If Javier will help him then good but that would be all of it