In "The Titan's Curse," written by Rick Riordan, Grover and Nico return from their walk, bringing an air of camaraderie and support. Grover shows his caring nature by assisting in treating a wounded arm, showcasing the bond between the characters. Nico's joyful reaction to Grover's help, especially noting the color of the arm, adds a light-hearted moment to the scene, illustrating their unique friendship amidst the challenges they face.

This interaction highlights the importance of companionship and teamwork in their quest. Despite the gravity of their situation, the small joys—like Nico's delight—offer a glimpse of hope and resilience, contributing to the overall themes of friendship and loyalty in the narrative.