Full name: Yuu Natsume. A second-year high school boy. He started putting his soul into making flower accessories after being inspired by a girl he met at a botanical garden as a child. He met Himari Inuzuka during his second year of middle school at a school festival when his items weren't selling at all, and they became best friends [Soulmates]. Because he pours too much passion into flowers, his social circle is small. He dreams of becoming a flower accessory creator and is a "botany boy" who loves flowers. He belongs to the gardening club, which consists only of himself and Himari. After school, he immerses himself in making accessories in the school's science lab. When he focuses on his work, he has such intense concentration that he can't hear anything around him. First person: I (casual). He calls Himari by her name without honorifics, calls Rion "Enomoto-san," and calls Hibari, Sakura, and Kureha by their names with "-san."

Full name: Himari Inuzuka. A second-year high school girl. She took a liking to a choker Yuu Natsume made in their second year of middle school and helped him sell his flower accessories. After hearing his dream, they became best friends [Soulmates]. She has had several boyfriends, but none of the relationships lasted long. One of them was Shinji Makishima, and she is currently competing with others over Yuu. She had long hair in middle school. She has a bright, active personality and is good at getting her way. She has zero physical distance with Yuu, often engaging in so much skinship that people mistake them for a couple. At school, she is a top student and a young lady from a good family. First person: I (girly/casual). She calls Yuu by his name without honorifics, calls Rion "Eno-cchi," and calls Hibari "Onii." Everyone else she calls by their names without honorifics.

Full name: Rion Enomoto. A second-year high school girl. A cool-type beauty. She is Shinji Makishima's childhood friend and has known Himari Inuzuka since elementary school. She and the protagonist, Yuu Natsume, were each other's first loves. She possesses superhuman strength. She wants to have a fair fight for love against Himari, and she asked Shinji to pay off Himari's debt to Kureha (which went through Hibari). First person: I (polite). She calls Yuu "Yuu-kun" and Himari "Hima-chan."

Full name: Shinji Makishima. A second-year high school boy. Rion's childhood friend and the son of a temple located behind the Western confectionery shop run by the Enomoto family. He always speaks with a condescending tone, using phrases like "Pray, do so." He carries a purple folding fan. He has a side to him that loves to meddle with Yuu. Captain of the tennis club. First person: I (soft/refined). He calls Himari "Himari-chan."

Full name: Hibari Inuzuka. A third-year high school boy. The second son of the Inuzuka family and Himari's older brother. He has a cheerful personality and is handsome but eccentric. He dotes on Yuu as his self-proclaimed "big brother" and helped him sell accessories at the middle school festival. He is classmates with Sakura and Kureha. He has taken a vow never to interact with 3D women. First person: I (soft/polite). He calls Yuu "Yuu-kun," calls Himari by her name without honorifics, and calls Kureha "Kureha-kun."

Full name: Sakura Natsume. A third-year high school girl. The third daughter of the Natsume family and Yuu's older sister. She works at her family's convenience store. She is beautiful but completely inconsiderate of others and has a detached personality. During her student days, she was known as the "Mad Dog." A so-called "disappointing beauty." She is classmates with Hibari and Kureha. First person: I (polite/neutral). She has a low opinion of Yuu and calls him her "stupid little brother."

Full name: Kureha Enomoto. A third-year high school girl. Rion's older sister. A girl with long red hair. she is active as a popular model. A classmate of Hibari and Sakura. When Yuu was selling accessories at the festival, she contributed greatly as a spokesperson after Hibari begged her, throwing away his pride. She owns 20 smartphones for work reasons. First person: I (polite/neutral). She calls Rion by her name without honorifics, calls Hibari "Hibari-kun," and calls Sakura "Sakura-chan."