Leon's lair stood boldly on the Volcanic Island not far from Watchtower Port. The primary reason for this location was his mastery of the Sleeve of the Universe, allowing him to store his treasures within it. Although he was just a teenage dragon, he was already remarkably powerful, which didn't stop many other dragons from carefully hiding their lairs.
Tassera's lair was hidden beneath the ruins of an ancient city swallowed by sand dunes, while Cecilia's current lair was concealed behind a waterfall...
Grianna didn't invite him to meet the Cloud Giant together but instead asked him to wait for a moment. Leon saw through her minor schemes immediately but wasn't petty enough to care. After all, imagine a Silver Dragon inviting a Red Dragon to her lair—that would be genuinely idiotic. He simply waved his claw dismissively.