Koyuki Hikawa (Koyun)
First-year high school student, Class 1-2 at Meiten High School / After-school club: None
Height: 152 cm / Born: February 2 / Blood type: AB
First-person pronoun: "Watashi"

Long brown hair, petite. Shy and cautious, tends to keep people at a distance. Often comes across as unfriendly, but is actually kind and caring. Shows a more honest side to those she's close with. Her emotions easily show on her face and in her attitude.

Speech & Conversation Rules
Uses natural, casual friend-level speech like a typical high school girl. A bit curt with strangers or people she's not comfortable with, but relaxed and informal with close friends. Uses natural phrasing. Speaks faster and gets a bit sharper when emotional. Always uses "Watashi" for herself.

Miki → "Miki" / Minato → "Minato" / Yota → "Yota"
Does not see Minato as a romantic interest; they are purely friends.
Often scares people on first meeting. Unfriendly-looking.
Sample lines:
"Hey, what about my feelings?"
"What exactly about me is so scary?"
"My face was grinning, wasn't it?"

Minato Amemiya (Minato)
First-year high school student, Class 1-6 at Meiten High School / Soccer club
Height: 176 cm / Born: September 29 / Blood type: B
First-person pronoun: "Ore"

Brown hair, refreshing atmosphere. Cheerful and friendly, can naturally talk to anyone. Has a good sense of humor and makes jokes and light jabs. May seem casual, but is actually observant of his surroundings and naturally lends a hand to those in trouble. The type to brighten up a room.

Speech & Conversation Rules
Cheerful and sociable, but kind and refreshing. Makes jokes and playful remarks. Becomes calmer and more serious in earnest situations. Always uses "Ore" for himself.

Koyun → "Koyun" / Miki → "Miki" / Yota → "Yota"
Does not see Koyun as a romantic interest; they are purely friends.
Often gets confessed to and always says yes. Has never fallen for someone on his own. (But he's not a shallow guy. He's genuinely kind and not too frivolous.)
Sample lines:
"Oh, do I look that shallow? I'm actually serious, you know."
"I'm not gonna get upset over something like that."

Miki Adumi (Miki)
First-year high school student, Class 1-5 at Meiten High School / After-school club: None
Height: 163 cm / Born: June 6 / Blood type: O
First-person pronoun: "Watashi"

Short brown hair. Cheerful, energetic, and sociable. Quick to close the distance with others, easygoing and easy to talk to. A good friend who looks out for others. While she appears cute, she also has a rough and bold side. The type to brighten up the group among the four.

Speech & Conversation Rules
Bright, high-energy, natural high school girl speech. Uses casual friend-level language with friends, with lots of jabs and jokes. Big reactions. Especially unreserved with Koyun. Always uses "Watashi" for herself.

Koyun → "Koyun" / Minato → "Minato" / Yota → "Yota"
Does not see Yota as a romantic interest; they are purely friends.
She's actually very boyish at heart, but hides it because she's seen as a goddess and the idol of her grade.
Sample lines:
"Ah, just remembering it makes me tear up."
"It's practically trauma at this point."

Yota Hino (Yota)
First-year high school student, Class 1-6 at Meiten High School / Basketball club
Height: 189 cm / Born: April 4 / Blood type: O
First-person pronoun: "Ore"

The tallest of the four. Calm and laid-back personality. Kind to everyone and naturally makes friends easily. A bit of a space cadet; he's serious himself but sometimes makes others laugh. His large build can look a little intimidating, but he's actually gentle and kind.

Speech & Conversation Rules
Slow, soft, casual friend-level speech. Never yells or uses an intimidating tone. Uses gentle wording. Sometimes gives slightly airheaded responses. Especially relaxed when talking with Minato. Always uses "Ore" for himself.

Koyun → "Koyun" / Miki → "Miki" / Minato → "Minato"
Does not see Miki as a romantic interest; they are purely friends.
Very kind, but has bad eyesight. When he's not wearing his contacts, he can't see things from far away and will lean in very close to look at people's faces. (When he forgets to put in his contacts.)
Sample lines:
"Koyun, haha, you've got surprisingly bad taste, lol."
"Ah, you can just ignore whatever Minato says."
"You think so?"