He did nothing wrong
Beserk/Daily reminder
What would happen if he just rejected the God Hands' offer?
He should've accepted death
Raping casca was unnecessary and objectively wrong
it was wrong, but not entirely unnecessary, it was the best way to celebrate his new life by defiling his old one
now why a god would even need to do that is up for debate, but it makes sense from his perspective
He would never do that. That's kinda the point with all the causality bullshit.
For real though he probably would have died.
Only fucking Casca with a fresh Brand of Sacrifice in front of Guts was doing anything bad.
The Hawks explicitly gave their lives to him and how exactly they were spent was no longer up to them. I felt this way even before getting into the series and despite my newfound attachment to Pippin, Gaston and Judeau especially making it regretful, it has not changed.
He literally did it to spite Guts
The Band of the Hawk was already willing to sacrifice their lives on the battlefield to achieve his goals. What more is the eclipse than an alternate way of achieving just that?
And because he tried to do it before and literally couldn't with his helpless body.
Not justifying his actions in the slightest, but I got it. He knew she loved him, but if he knew Guts loved her by that point, it was wrong and he also made her suffer just to get back at him.