Namida-kun is a tear sprite residing in Shizuku Forest. He runs a sports gym and maintains an athletic lifestyle, frequently encouraging others to participate in physical exercise. His most recognizable trait is nearly constant crying, though his tears signify more than just sadness. This emotional expressiveness connects directly to his intense passion, which can erupt as fiery enthusiasm capable of burning or melting objects.

Physically, he appears as a dark blue figure with perpetually streaming tears down his face. His design features three visible teeth, consistently sparkling eyes, and occasional radiant sparkles surrounding his body.

His personality blends athleticism with profound emotional sensitivity. He interprets ordinary events as deeply meaningful, particularly those associated with youth, often declaring such observations significant. This passionate outlook frequently triggers his fiery outbursts.

Integrated into the Shizuku Forest community, he interacts with various residents, including forming friendships like his connection with Luna, a ghost seeking extended life experiences.