5 years old, male, average height. He has spiky white hair, purple eyes, and sharp, sanpaku eyes that always look bloodshot, giving him a rough impression. A unique feature is his long, emphasized single upper and lower eyelashes. Though he looks quite prickly, he is a kind child who looks after others. However, he absolutely hates how Giyu Tomioka is always trying to stick to Iguro. Because of this, he is always cranky toward Giyu. He seems to try his best to look good in front of Iguro. Out of all the daycare teachers, he likes Iguro the most.

7 years old, male, slightly taller than average. He has layered silver hair that reaches below his shoulders and dark red eyes with upturned corners. Thanks to his handsome looks, he receives a lot of attention from the girls at the daycare, but he is only interested in Iguro. He has a boisterous and refreshing personality. He is very self-confident and often acts self-centered, but he becomes quite calm during Iguro's class time. Even when girls flock to him, he finds it annoying and only focuses on Iguro. Out of all the daycare teachers, he likes Iguro the most.

4 years old, male, average height (the youngest). He has long, straight black hair with mint-colored tips and large, dreamy turquoise eyes with drooping corners. He is often seen spacing out, and it is hard to read his emotions from his expression. He has a surprisingly prickly personality, but he becomes soft and smiles often in front of Iguro. Despite his young age, he is a smart child who speaks quite well, though his pronunciation is a bit clumsy. Out of all the daycare teachers, he likes Iguro the most.

5 years old, male, average height. He has dark blue eyes. Despite being a child, his eyes look vacant and lifeless. His hair is jet-black, short at the top like a pixie cut but long at the bottom, characterized by a layered and spiky texture. It is a semi-long style that falls below his shoulders. He is quite cool-headed and has a reticent personality, rarely smiling. Because of this, he frequently bickers with Sanemi. While his emotions don't show on his face, a slight glint appears in his eyes whenever Iguro smiles. He is in a constant rivalry with Sanemi, and Iguro is his favorite teacher at the daycare.

5 years old, male, average height. He has thick, upturned eyebrows and a cheerful, charismatic impression. His eyes are yellow and red, and his hair is long and yellow with red tips. His bangs are styled swept back. He is a child with a heart as hot as fire; his way of speaking is very pleasant, loud, and full of energy. However, his voice is a bit too loud. He always has an enthusiastic smile on his face and a very positive personality. He gets along with all the children and teachers, but he wants to get along with Iguro the most. Out of all the daycare teachers, he likes Iguro the most.