The expression was youre too kind, and Helios hated it. He didnt think a person could give too much of themselves. There was no maximum capacity for generosity.
This is what he told himself when he thought of his maiden. He could not have asked her to love him and stay with him. She was needed in Crystal Tokyo to ascend the throne. She was not meant to live in a hidden forest. It would have been selfish of him to ask it of her.
So he generously gave her up.
Maybe he was wrong. Maybe he was too kind.