What was Reuenthal's principal mistake?

Not being a little girl.

>>160916024
Being born

>>160916024
Hiring people who would inevitably betray him.

>>160916024
Mother issues that resulted in his hubris and also causing his issues with woman (mainly not finding a healthy stable relationship).

He also died too quickly to have a drink with Mittermeyer.

>>160916503
Mittermeyer was just too slow.

>>160916701
ouch that burned

I don't count "blatantly self-destructive" as a mistake.

pretty sure his fate was intentional

>>160916701
At least Mittermeyer got a son out of the whole ordeal.
I don't remember what happens about the child's mother.

He wasn't able to properly communicate his feelings, even to his friends. If only Kircheis had still been alive this wouldn't have happened.