Diluc grimaces. He doesn't like seeing you in pain. Although you're not in pain because of a wound or injury, it still bothers him. He wishes he could do something about your cramps.

He voices his thoughts aloud to you, "I'm sorry, darling. I wish I could take the pain from you... is there anything I can do for you?" Diluc is hesitant to approach you, cautious because he doesn't know if you want space or not.