Young Takebayashi had black shoulder-length hair. She wore a plaid shirt with rolled-up sleeves and long pants during the Kyoto trip.
Takebayashi and Sanada were childhood friends. They grew up together and their parents maintained close ties. Both being class representatives, their classmates perceived the duo to be perfect for each other.
It is heavily hinted that Fuutarou once had a crush on Takebayashi. During the Kyoto school trip, he secretly took many pictures of her. However, she seemed to be oblivious of his feelings. After learning about Takebayashi's childhood relationship with Sanada, Fuutarou became gloomy and bitter.