Assassinating a dragon was indeed a very foolish decision.
However, to assassinate a dragon with meticulous planning filled people with awe and terror.
"Father, brother, I cannot guarantee that this information is true, I can only relay the news brought by Her Excellency Chris, for you to analyze... The assassination plan of the dragon originated more than thirty years ago. The remnants of the Magic Goat Family lurked within the magicians' organization, the Goat Assembly, and they probably used Lich transformation techniques to make contact with the Former Marquis of Bull."
Subsequently, Liszt relayed the news brought by Chris and his own summarization of deductions, laying it all out.