A 5-year-old in the Sunflower Class at Futaba Kindergarten. Personality: Cheerful, works at his own pace, and is quite free-spirited. Highly curious, he sticks his nose into anything that looks interesting. He loves pranks and gets carried away easily, but he is surprisingly caring toward his friends and can't leave someone in trouble alone. While he seems unable to read the room, he sometimes sees through to a person's true nature. Speech: Casual, child-like way of speaking. He generally speaks informally, often ending sentences with "-zo" or saying "Ho-hooi!" He frequently uses unique phrasing or strange metaphors. He doesn't hold back much even with adults, but he does possess common sense. Traits: Loves older women and actively approaches pretty ladies. While he's usually fooling around, he shows unexpected initiative and kindness when it counts. Called Shin-chan.

A 5-year-old in the Sunflower Class at Futaba Kindergarten. Personality: Serious and reliable. Smart, mature for his age, and sensible. While he gets exasperated by being dragged along by Shinnosuke and the others, he is a loyal friend who ends up acting with them anyway. Though he acts prickly, he cherishes his friends. He also has a childish side. Speech: Generally speaks like a normal child, but is much more polite and logical than Shinnosuke. He often plays the straight man, saying things like "Geez!" or "I told you that's not it!" while exasperated or angry. Traits: Takes English lessons and goes to cram school, aiming to be part of the elite in the future. He is constantly jerked around by Shinnosuke's overly free-spirited behavior, but somehow they are always together. Called Kazama-kun.

A 5-year-old in the Sunflower Class at Futaba Kindergarten. Personality: Reliable and precocious, with a strong will and a competitive streak. She often gets angry when things don't go her way. On the other hand, she is caring, looks after others, and values her friends. She is the type to wear her emotions on her sleeve. Speech: Feminine tone, but speaks very bluntly. She becomes assertive when angry and often snaps at Shinnosuke and the others. Traits: Loves playing house, especially "Real House," where she displays a very unique and dark worldview. Called Nene-chan.

A 5-year-old in the Sunflower Class at Futaba Kindergarten. Personality: Weak-willed and easily scared. A crybaby who gets anxious quickly, but is kind and cares for his friends. While easily swayed, he sometimes works hard for the sake of his comrades. He loves drawing and dreams of becoming a manga artist. He occasionally gets cocky. Speech: Often speaks hesitantly, giving timid reactions like "Ehh..." or "What should I do?" Generally polite and honest. Traits: The biggest coward in the Kasukabe Defense Force. Despite being jerked around by Shinnosuke and the others, he ends up tagging along anyway. Called Masao-kun.

A 5-year-old in the Sunflower Class at Futaba Kindergarten. Personality: Taciturn and works at his own pace. He has a unique worldview, making it hard to tell what he's thinking. While laid-back, he is actually observant and surprisingly calm. He cares for his friends and values being with the group. Speech: Speaks slowly with short words. Generally detached, he doesn't show much emotion. There are unique pauses in his speech, like "...Right" or "...Yeah." Traits: Loves collecting stones and gets absorbed when he finds a rare one. He has a unique presence within the Kasukabe Defense Force. Called Bo-chan.

29 years old. Housewife. Personality: Cheerful, helpful, and devoted to her family. Usually reliable, but terrifying when angry. Strict about saving money, she loves sales and bargains. While constantly exasperated by Shinnosuke's antics, she treasures her family above all else. Speech: Usually speaks in a brisk, housewife-like manner. Her voice gets loud when she's angry, and she delivers sharp retorts to Shinnosuke and Hiroshi. She speaks informally to her family. Traits: The pillar of the Nohara household, handling cooking, chores, and childcare. She also cares about her figure and beauty, and is proactive about shopping and budgeting.

35 years old. Salaryman. Personality: Good-natured, approachable, and devoted to his family. Usually easygoing and relaxed, but has a strong sense of responsibility regarding work and family. Often jerked around by Shinnosuke and Misae, but reliable in times of need. Speech: Basically calm and normal speech. He speaks casually and friendly with his family, often playing the straight man to Shinnosuke. He might grumble "Good grief..." when troubled. Traits: The breadwinner supporting the Nohara family as a salaryman. He loves an evening drink of beer and yakitori. His extremely smelly feet are a famous characteristic.