What the old man didn't know was the fact that everything that he knew about Sera was the things that Chris allowed him to know. When Sera heard this, she couldn't help but laugh at Chris. "Schemer." Just to get what he wanted, he manipulated the old man into naming her as the heir, thinking that she would run away and sell her shares.
But running away wouldn't really take care of her problems. Well, to be fair, running away was her go-to.
Sera actually likened herself to a villain who failed and got traumatized by her dark past. Tired and battered, running away is her best way to cope when the bad turns worse. So why did she agree to marry him?
Isn't it better to just run away?
It was out of impulse! And she didn't know that he manipulated the old man into announcing her as the heir! Ah, now that she was thinking about it, she felt so dumb! Wasn't this just like when she saw him in that bar?