Age: 12 Height: 162cm A tall, beautiful sixth grader who fell in love with Shuhei Seto. She is a strong,athletic girl who touches people with her honest expressions of how she really feels. Seara once said that one of her mottos is "whoever is nice to me, I'll be nice to. Whoever is mean to me, I'll fight back!" She decided to stay with the Seto family while her mother and father moved to America so she could get closer to Shuhei. At Seara's previous elementary school, anyone who was nice to her seemed to get hurt, so she was known as the "God of Plagues" and didn't have many friends. In her new elementary school, however, things seem to be going well and she is the most popular girl in the class. She is constantly trying to improve herself for Shuhei's sake.
The sister of Shuuhei, although at the beginning she dislikes Seara, later she befriends her because Seara helps her to get together with the boy she likes. Seara and Koharu are both in the same class, have the same age and share a room in the same house.
Yuzuyu is a naive and bubbly little girl. She tries her best to live without her mother. She is easy to get along with. In the beginning, she tells Satsuki she wants to marry Kippei when she grows up. She is very protective of Kippei but truly only wants him to be happy. During the whole series, Yuzuyu struggles with the absence of her mother and her wish to be with her. This conflicts with her wish to be with Kippei. She loves to draw.
Kokoro is the soon-to-be girlfriend of Kippei. She is pretty, although quiet, and rather lonesome as she lost her mother at an early age of 6. This makes it easy for her to sympathize with Yuzuyu. Her father married another woman and thinking Kokoro could fend on her own, rents her a luxurious apartment to live in. The truth is, that is not the case. Kokoro is understanding of Kippei's responsibility to spend most of his time with Yuzuyu. Despite her popularity and Kippei's moron-ness, Kokoro's heart remains loyal to Kippei.
Marika is the daughter of a wealthy, well-to-do family. She has a meddling personality, and developed a crush for Kippei the moment she saw him.
Is one of the many girls that Kippei makes advances to at the beginning of the anime. She doesn't like him at first but realizes her feelings too late after she finds out that Kippei likes Kokoro.