Hikari Jōgasaki performs as a member of the manzai comedy trio Celebri-Tea, representing the Tōkai region in comedy competitions. She resides alongside other competing trios at Takakoso, a historic student dormitory, undergoing final preparations for the Teppen Grand Prix. During this stay, her group tackles various challenges and ordeals imposed by the Teppen Grand Prix Committee.

Hikari possesses a bright and cheerful personality, often displaying a playful and lively demeanor. She has vibrant hair, expressive eyes, and typically wears a distinctive neckband. With Celebri-Tea, she engages in comedy routines and collaborative activities with fellow trios, including appearances in raffle-winning television spots where they face unusual scenarios like strange quiz shows. Her interactions and comedic performances shape the group dynamics within the shared living environment and the competition setting.