The father character, whose first name is Kento, is an integral member of the Yamada family. As the primary paternal figure, he functions as the working parent within the household. His background is that of a professional who works from home, as he is frequently depicted in his home office attempting to concentrate on various projects and meet important work deadlines. The family structure includes his wife, whose guidance is often central to the home, and his son, Yōhei, who relies on Kento for task assistance and problem-solving.

In terms of personality, Kento presents a mixture of serious dedication to his professional responsibilities and a capacity for relatable, everyday distraction. When focused on his work, he can appear very serious, but he is also shown to be easily distracted, especially when faced with the pressure of a looming deadline. His personality also includes a touch of personal passion, as he has a known enthusiasm for collecting vintage jeans, a hobby his wife playfully criticizes when she catches him indulging in it during work hours. His reactions to the chaos caused by Chi, the family kitten, are often dramatic and panic-driven, yet they stay within the realm of realistic household humor. For instance, he panics when Chi plays on his keyboard and accidentally sends a nonsensical email, and he overreacts in a comical fashion when she gets onto a high balcony. This tendency to overreact rather than seek simple solutions is a key trait that leads to much of the physical comedy surrounding him.

Kento’s primary motivations revolve around fulfilling his role as a provider. He works diligently to meet his project deadlines and maintain his professional standing, which is why disruptions to his workflow cause him significant stress. His actions are also driven by a desire to maintain order and safety in the home, though Chi's antics often thwart this goal. He clearly cares for his family, and his role in the story is to serve as a foil to Chi’s innocent chaos. While Chi’s actions are accidental and playful, Kento’s reactions of panic, frustration, and eventual relief are what generate much of the domestic humor and narrative tension in episodes focused on the household.

Within the story, Kento’s key relationships are defined by his interactions with Chi and his son. His relationship with Chi is one of a beleaguered pet owner who is constantly outmaneuvered by the small kitten; he often ends up bearing the brunt of her playful attacks and causing more trouble for himself in his attempts to manage her. He is the parent who experiences the most direct, chaotic consequences of pet ownership. With his son Yōhei, Kento has a more supportive and traditional paternal relationship. Yōhei looks to his father for help with tasks and problem-solving, representing a more calm and cooperative family dynamic. His relationship with his wife is characterized by her keeping him on track, gently scolding his distractions and pulling him back to his responsibilities.

In terms of development, Kento does not undergo a dramatic transformation but instead consistently finds himself at the center of miscommunication and physical humor. The comedy of his character stems from seeing a serious, deadline-driven professional repeatedly undone by the simple, innocent actions of a kitten. His development is evident in the recurring pattern of the narrative: Chi creates a problem, Kento panics and overreacts, and the situation is eventually resolved, often with Chi unwittingly saving the day, allowing Kento to finally relax. As for notable abilities, he possesses no special skills beyond those of an ordinary working parent. His most defining "ability" is his reactive nature, which makes him a prime target for the show's physical comedy and a perfect straight man to Chi's chaotic energy.