Although the ship named 'Sunken Vessel' exploded in two, all the newly knighted participants of the knighthood exam had heard and seen it.
However, apart from the red-haired girl Evelyn who had witnessed that Ren was responsible for it, everyone else had only heard the loud explosion and seen the 'Sunken Vessel' burning and breaking in two.
Therefore, they naturally assumed it was the work of the Imperial Navy, never even considering that it could have been one of the young participants in the knighthood examination.
On the other hand, perhaps due to rules concerning confidentiality, the exam committee members and navy officials who had witnessed Ren blowing up the ship kept completely silent about the situation at the time.
As for Evelyn, the only other eyewitness, she was reserved and a bit proud, and she had no desire to spread the news.
Thus, one thing led to another, and none of the youths knew that Ren was behind the explosion of the ship.