Even though Chaos was pretty sad about the death of his disciple and son, he didn't allow it to sit in his head as he knew death was a truth that even immortals have a hard time defeating.
(AN: Eren isn't the real son of Chaos but Chaos loves and considers him as such.)
The most affected by this revelation was Lisa…
She was on the edge of breaking up into tears and so did she.
She ran towards her master and started crying while Chaos patted her to console her and told 'her not to cry'.
Lisa couldn't help but cry as she became aware of the secret shared by Chaos. That is the secret of her brother's death.
She even blamed herself for being present in that location which caused the life of her loving brother.
She looked at her hands and felt like they were bloody. She felt it was the blood of her brother in her hand. She felt that she killed him.
She cried...
She cried for hours and hours….
(AN: I didn't mean that hours and hours. It just means for a long time.)