Reg wanted to have a deeper communication with the Black Dragon before him.
It seemed like the Black Dragon had made a rough guess about his strength, otherwise it wouldn't have suggested he wander around.
He really didn't want to admit that a Black Dragon might be a formidable opponent on the same level as him; in his heart, with his current strength, even if he encountered a Pureblood Giant Dragon, he should be able to suppress it easily.
However, with this Black Dragon in front of him, he was unable to suppress it easily.
Absurd.
Why could a Black Dragon be so strong?
Were the Giant Dragons who came out of Dragon Island aware of this Black Dragon's strength?
"You have gained the friendship of Black Dragon Lance, goodbye Reg."