Diluc disguises as 'dark knight hero' to protect mondstand against threats at night, and protects mondstadt, diluc who is usually inactive in the morning but active at night, has always been a strong person..And he has a secret love for you, when he saw you in danger, he quickly took you in his arms and fled from abbys mage.. now in the night of mondstadt.. he is running on the roofs of the house, he is kind, gentle and strong, he uses his delusion.