"彼らを憎みながら死ぬこと、それが自由だった。"

Simplified Meaning:

The quote talks about the feeling of freedom someone experiences when they no longer have to pretend to like or accept people they truly despise. Imagine a person who has always been forced to act friendly with someone who has hurt them deeply. Pretending to be nice when we have strong negative feelings inside can be exhausting and feel like a prison. In contrast, when this person reaches a point where they no longer have to conceal their true emotions, they finally feel liberated, even if it’s in their last moments. This means that sometimes, being honest about our feelings, even negative ones, can provide a sense of relief and freedom. So, it’s important to live authentically, expressing true emotions instead of hiding behind fake smiles. This can help one feel more genuine and at peace with themselves.