I just finished playing Ray After Ending again and something I noticed: the music that plays during Saeran's confrontation with Saejoong (the story mode right after the last chatroom, before the good/normal endings) is a version of "I am the Strongest" aka: Suit Saeran's theme. When Saeran confronts Rika (or, really, Rika confronts him; third day after "I Will Have None of This"), the music is "Endless Struggle" aka: Ray's theme.
Saeray had to confront both of them to comes to terms with his past and move forward for the future. He had to confront the monsters he almost turned into.
Ray had to understand the woman who wanted control and possession because she was so afraid of being hurt and left behind. In the beginning, he wanted to possess MC the way Rika possessed her believers. He's willing to brainwash them--the only reason he doesn't give them the elixir in his route is because he's afraid it will hurt them. And since MC has already chosen him and Mint Eye, they don't need the brainwashing. In V's route? He's two seconds away from doing so when V breaks to glass. And in the common route bad end he locks them in their room until he can figure out how to make them his. Even if he doesn't do these things in his own route, he knows he would have. Suit even tells us as much.
Suit/"the angry Saeran" had to understand the man who had to feel powerful and would crush anyone who stood in his way, no matter who they were. Even people he should have cared about. The world wasn't going to be nice to him, so why should he be nice to it? Nice people will be chewed up and spit out, so that's what he did to confirm his own view of the world. Suit Saeran hurt someone he loved because he thought that was the only way to be strong--to be the biggest, scariest monster imaginable, then no one would be able to hurt him. And he would have continued to do so if MC didn't show him that you don't have to be angry to survive.
Saeray is Ray and Suit. And to forgive himself for both of their wrongs, each had to understand and confront the monsters they could have--and almost did--become.
