Hell Harbinger's feed

Does the author think that by giving ML a sob story, everyone will let bygones be bygones? All its making me more angry with him. He knew she was innocent, he had feelings for her for the longest of times, but then he what changed his mind? Erased his memory? And became her judge jury and executioner? He did all of this while already having feelings for her? Thats unforgivable. He knew what he was doing and he still did it.