Nao Sasayama is a 21-year-old university student and one of the twelve “pillow boys” featured in the series Makura no Danshi. His background centers on his life as a college student who is deeply immersed in modern technology and social activities. He is described as a hip and trendy individual who loves using his smartphone and enjoys attending mixers, events where people gather to socialize and meet new acquaintances. This indicates a personality that is outgoing, sociable, and oriented toward living in the present moment.

In terms of physical appearance, Nao has short orange hair and green eyes, giving him a youthful and approachable look that matches his friendly demeanor. His role in the series is that of a comforting presence who speaks directly to the viewer, offering gentle words and companionship to help them relax and fall asleep. As each episode features a different boy, Nao’s appearance is a standalone segment that highlights his warm and easygoing nature.

Nao’s motivations appear to revolve around enjoying life to its fullest: he values connections with others, whether through digital means or face‑to‑face gatherings. He does not display any special supernatural abilities; rather, his notable trait is his ability to create a soothing atmosphere through his tone of voice and reassuring words. Character development is minimal, as the episode‑based format does not allow for ongoing narrative growth, but he remains a representative of cheerful, modern youth within the ensemble.