On the contrary, Yuvin would most likely sell off the entire family to the Schulz family. After that, he would take the huge amount of money that the Schulz family would give to him just so he could go out and enjoy life.
In that case, the entire Harker family would only become a tool that Yuvin would be using to make money for himself.
Instead of allowing that to happen, it’d be better for Holden to live for a few more years so that he could personally lead and bring the Harker family to grea