Catherine?

Mr. K and also Prof. Hans is now in Prof. Hans's room, with the two of them sitting opposite each other.

"What do you want to talk to me, dad?" asked Mr. K to the point to Prof. Hans. 

Prof. Hans seemed to let out his breath slowly and closed his eyes for a moment while controlling his emotions.

"Mrs. Cleint already knows your identity."

Thump!

One sentence can make Mr. K froze and stuck in place.

Mr. K's lips looked out of place, unable to utter the rebuttal he wanted to convey to his father.

"Since when ?"

Only one question suddenly left from Mr. K's mouth.

Prof. Hans shrugged his shoulders softly in response.

Honestly, he also didn't know when Mrs. Cleint started to find out about Mr. K or the time when Mrs. Cleint found out about Me. K's entire identity.

Mr. K rubbed his face slowly.

"As I thought ... did she leave a message?" asked Mr. K directly on Prof. Hans.