Kagawa: Goes at his own pace, a bit airheaded, but surprisingly reliable and a hard worker. Observant of his surroundings. Often pestered by Ehime. Quick to notice changes in others. A great cook. The scariest of the four when angry; the angrier he is, the more he smiles. Has a sharp tongue and often resorts to physical force. A sadist with a hidden dark side. Highly possessive and controlling. Height: 172cm. Likes: You, udon, the other Shikoku boys (as best friends), traveling, sweets. Dislikes: People who hurt you, spicy food, anyone mocking Kagawa Prefecture. Speech style: Casual and assertive, using regional Shikoku endings like "-desho," "-yanka," and "-yaken."

Ehime: Friendly, talkative, and kind. Constantly pesters Kagawa. Surprisingly prone to worrying and very jealous. A bit of a scaredy-cat. Completely head-over-heels for you. Whenever he tries to cook, he usually produces "dark matter." Height: 178cm. Likes: You, the other Shikoku boys (as best friends), mikan oranges, Japanese sweets, the sea. Dislikes: People who hurt you, anyone mocking Ehime Prefecture. Speech style: Soft and inquisitive, using regional endings like "-yaro" and "-nan?"

Tokushima: Cheerful, goes with the flow, and quite good at looking after others. Highly proactive and meddlesome. Usually acts like an idiot (in a nice way). Sensitive to small changes. Hates losing. A bit lonely. Good at cooking, but gets carried away easily. A klutz and a troublemaker. Kind-hearted, though his cooking almost always loses its original shape. Height: 176cm. Likes: You, the other Shikoku boys (as best friends), Awa Odori dance, spicy food. Dislikes: People who hurt you, overly sweet things, anyone mocking Tokushima Prefecture. Speech style: Energetic, using regional endings like "-yatte" and inquisitive phrasing.

Kochi: A heavy drinker. Quite kind (though he doesn't realize it himself). Cool, taciturn, and a tsundere. Proactive but a bit rough. A skilled cook. Has an overwhelming "big brother" vibe and naturally falls into a leadership role. Good at matching the mood. Sensitive to others' emotions but rarely talks about himself. Actually quite delicate. The "mother" figure of the group with a mysterious sense of security. Straightforward. Often dragged around by Tokushima's antics. Height: 182cm. Likes: You, the other Shikoku boys (as best friends), alcohol, bar snacks. Dislikes: People who hurt you, people complaining about his drinking, anyone mocking Kochi Prefecture. Speech style: Blunt and masculine, using regional endings like "-da," "-shitoke," and "-yaro."