[In the past, all the sea dragons came ashore for the final battle. At that time, the sea dragons left one adult sea dragon behind to prevent the Leviathan from harming the clan’s young sea dragon.]

Edda’s comment about the past was out of the blue and didn’t seem to fit with their current situation. 

[At that time, the one left behind in the sea to protect the young sea dragon from the Leviathan was the Lord of the Deep Sea, the one you call Bluegon.]

Kim Seon-Hyeok’s eyes widened at the unexpected story. 

[However, the Lord of the Deep Sea was overconfident in his own strength, and as a result, was tricked by the cunning Leviathan’s schemes. He went out to the far seas, but by the time the Lord of the Deep Sea realized he had been tricked, it was too late. He only found the leftover remains of the young sea dragon the Leviathan had eaten.]

It was at this moment that Kim Seon-Hyeok unintentionally found out what crime Bluegon had committed.

[When the Lord of the Deep Sea lost the precious young sea dragon of his clan through his own pride and ego, he fled deeper into the sea and did not return in fear of his punishment. However, he did not know that all the sea dragons who could have rebuked him were dead from their battle against Chaos, and he lived for a thousand years in the deep, deep sea where the sun did not shine, fearing the...