The point of an earlier scene, the one where Dietrich is revealed to be alive to Wilhelm, was for Rein to rest if Wilhelm cares about Dietrich and whether or not he killed him in cold blood. His reaction was to draw his blade wondering how he's still alive. This confirmed for Rein that Wilhelm never cared for him and killed him in cold blood.
Flash forward and now the story is that he didn't care at first and then ended up feeling guilty and changing his mind but was too late to save him. He wasn't lying when he said he didn't kill him or when he was crying about his death. The first scene doesn't really make much sense in this new context, but I guess he was just too shocked? It's now exploring how deadpan he can react even when he's looking at his son and thinking "he's so adorable", so maybe the reaction didn't match the inside or maybe he was just too far gone at the time because of his estrangement with Rein at the time. He was very mentally broken at the time.
Honestly surprised he's not just a psychopath that was faking emotion at times, that's what it seemed like at the start, middle and late game. The happy ending is nice though, I'm glad everyone is happy.
The point of an earlier scene, the one where Dietrich is revealed to be alive to Wilhelm, was for Rein to rest if Wilhelm cares about Dietrich and whether or not he killed him in cold blood. His reaction was to draw his blade wondering how he's still alive. This confirmed for Rein that Wilhelm never cared for him and killed him in cold blood.
Flash forward and now the story is that he didn't care at first and then ended up feeling guilty and changing his mind but was too late to save him. He wasn't lying when he said he didn't kill him or when he was crying about his death. The first scene doesn't really make much sense in this new context, but I guess he was just too shocked? It's now exploring how deadpan he can react even when he's looking at his son and thinking "he's so adorable", so maybe the reaction didn't match the inside or maybe he was just too far gone at the time because of his estrangement with Rein at the time. He was very mentally broken at the time.
Honestly surprised he's not just a psychopath that was faking emotion at times, that's what it seemed like at the start, middle and late game. The happy ending is nice though, I'm glad everyone is happy.