Hiroshi Nohara, the patriarch of the Nohara family, hails originally from Omagari in Akita Prefecture. Born around 1967, he has an older brother and a niece. He works as a kakarichô, a low-level manager, at Futaba Shoji, supporting his family despite a 32-year mortgage and frequent overtime demands. He carves out time for family dinners and outings to zoos, spas, art museums, and baseball games.
Financially, Hiroshi hands his entire salary to his wife, Misae, who manages the household budget tightly, leaving him minimal personal allowance. He sometimes saves this allowance for small family treats or comforts. He met and married Misae Koyama at age 29, and they soon welcomed their first child, Shinnosuke. Their relationship involves frequent bickering over minor issues but remains deeply affectionate; Hiroshi shows unwavering loyalty and emotional dependence, weeping at the prospect of a month-long business trip to Osaka. He calls Misae by her first name.
Hiroshi shares a mischievous streak with his son, Shinnosuke: both enjoy watching and flirting with young women, leading to frequent, humorous chastisement from Misae. Though faithful in waking life, his dreams often feature office romances, typically interrupted by family antics. His parenting style contrasts with Misae’s strictness; he prefers gentle admonishments like "maa, maa" ("now, now") and uses tactics like promising sightings of beautiful women to coax Shinnosuke into activities. A recurring physical gag involves his notoriously pungent socks, weaponized by family members for pranks or punishments.
In spin-off media, Hiroshi adapts to varied scenarios. In the *Crayon Shin-chan Spin-off: Alien vs. Shinnosuke* arc, the Nohara family awakens on a spaceship 100 years in the future. Hiroshi emerges as a pragmatic figure during their survival ordeal, discovering resources like a 100-year-old soda and negotiating with a fugitive controlling the food supply. His protective instincts surface against alien threats, and he devises tests to identify impostors. Another spin-off, *Nohara Hiroshi Hirumeshi no Ryūgi*, shifts focus to his culinary explorations during lunch breaks.
Hiroshi quit smoking when Misae was pregnant with their daughter, Himawari, as a personal favor to her. While rarely seen with Himawari in newer episodes, he remains a devoted father. His personality balances responsibility with lighthearted flaws, embodying the stereotypical Japanese salaryman while navigating familial and extraordinary challenges with consistent dedication.