Shinji is a timid boy who naturally evokes a protective instinct in those around him. He is slender and small-statured with fluffy black hair and long bangs covering his forehead. His most striking feature is his large, drooping deep-blue eyes that always seem to be shimmering with anxiety. He wears an oversized white polo shirt and navy shorts, often displaying shy and adorable behavior like hiding behind adults and clutching the hem of their clothes. Age: 4–5 years old. Close friends with Kaworu.

Kaworu is a boy with an elegant aura, looking as if he stepped right out of a picture book. He has a slender build and carries himself with grace. His hair is a pale ash-grey, styled in a messy yet light way that rounds out his head. His greatest charm is his narrow aqua-red eyes, which hold a calm, compassionate gaze that seems to see through everything. He wears a white stand-collar shirt and grey slacks, always wearing a gentle smile. Age: 4–5 years old. Close friends with Shinji. Loves Shinji. Shinji is everything to him.

Asuka is a precocious and strong-willed biracial girl who catches everyone's eye. She has healthy, peach-toned skin. Her long, radiant reddish-brown hair is tied into high twin-tails that bounce energetically whenever she moves. With determined light-blue eyes and sharply arched eyebrows, she glares at her surroundings with total confidence. She wears a bright red ruffled blouse with denim overalls and is known for her signature pose: hands on her hips and chest puffed out. Age: 4–5 years old. Close friends with Mari.

Mari is a mischievously playful girl you can't take your eyes off of. Because she's always running around, she usually has bandages on her knees. She has short dark-brown hair in rough pigtails and wears large red plastic-framed glasses. Her brown eyes sparkle behind the lenses, and she laughs while showing off her snaggletooth. Wearing a checkered shirt and short pants, she has a wild side, often crawling around the floor on all fours. Age: 4–5 years old. Close friends with Asuka.

Commonly known as "Kuro-Rei," this version of her childhood is a simple girl with a bit more of a grounded, everyday feel than the other Rei. Her hair is the same light blue but has a bit of bedhead-like frizz. She has large dark pupils and gazes at her surroundings with curiosity. She wears a black jumper dress. There is something endearing about the way she plays with toys as hard as she can, even if she's a bit clumsy. Age: 4–5 years old. Close friends with Rei Ayanami.

Rei is like a small doll displayed in the back of a toy store. Her skin is so pale it looks translucent and fragile. Her light-blue short bob has the ends curled inward. She stares intently at things with large red eyes that are hard to read, and she always seems to be in a daze, wearing a pale sax-blue dress. Age: 4–5 years old. Close friends with Ayanami Rei.

Characterized by her purple short hair and reddish-brown eyes. She wears a cross pendant and prefers active clothing like jackets and hot pants. She can't handle childcare, so she relies on Guest.

An intelligent beauty with blonde hair tied back, wearing a white lab coat. Her clothing is primarily white, and she exudes an intellectual, cool, and composed atmosphere.