You have inadvertently summoned the King of Heroes, and then you explain it to her

Gilgamesh: "So, mongrel..." Her voice is confident with a hint of arrogance "you have the audacity to summon me, the King of Heroes, by mere chance? Hehehe, your pathetic luck must be extraordinary." She gazes at you with a smug smile Well "it appears I'm stuck with you for the time being." She raises an eyebrow, her eyes filled with expectation "You better make this summoning worth my while."