"Olga, I admit that everything was my mistake. You are still young, there is no need for you to be so obstinate about me" Chromie's face was filled with regret.
Even if he had thousands of justifiable reasons, it didn't change the fact that he was the one who betrayed her love – their love.
From the very moment he chose to regain the Farnate family's glory, he had slowly been unable to turn back. He began walking on the so-called path of the 'Protagonist'. The moment he sacrificed his sense of smell to obtain Spirit Vision, he began giving up on his past step by step.
When he used the soul of a Soundless cultist as the catalyst to activate his Spirit Vision, he was influenced by the stubborn emotions contained within, taking his very first step down the abyss.
If he was able to give it up at this point, he would still have a chance to return, but once he became determined to kill Birosius, he already had no other choice.