Rei "Kurei" Yasaku, a third-year student at Gatagata Girls’ High School, leads the DIY Club she founded, channeling expertise gained from her parents’ home improvement store, Waku Waku Wan Wan. Her practical skills—repairing bicycles, sourcing materials for projects like a treehouse, and repurposing surplus resources—fuel her determination to prevent the club’s dissolution.

Sporting short orange hair, brown eyes, and a stern expression, her imposing exterior clashes with private passions for shōjo manga and an eclectic collection of whimsical trinkets in her room. Though reserved, she unwittingly attracts admiration from younger peers. Attempts at baking expose her quirks, like offering clumsily undercooked treats during club meetings.

She connects with others through mutual fandoms, such as *Sunflower Girls*, and guides club members in collaborative builds. Her surname, Yasaku, merges the characters for "arrow," "difference," and "living," while "Kurei" nods to "clay," reflecting her hands-on creativity.