Yusuke Kinoshita debuts as the protagonist in the first Welcome to Pia Carrot game, compelled by his father, Yasuo Kinoshita, to work at the family's Pia Carrot restaurant chain during summer following poor academic performance. Yasuo owns and operates the chain, establishing Yusuke's immediate connection to the business.

Four years later in Welcome to Pia Carrot 2, Yusuke transitions into a managerial role, serving as chief of the "Pia Carrot 2nd" restaurant. This marks his progression from reluctant part-time employee to a key figure within the family enterprise. His sister, Rumi Kinoshita, also appears periodically in the sequel, confirming the family's continued involvement.

By Welcome to Pia Carrot 2.2, set four months after the second game, Yusuke relocates to manage the newly opened "Pia Carrot 3rd" as its temporary chief. His departure prompts Ryoko Futaba to become substitute chief at "2nd," highlighting his role in expanding the chain's operations.

In later entries like Welcome to Pia Carrot 3, set one year after Pia Carrot 2, Yusuke's direct management role diminishes. He has married Satomi Morihara from the original game, who now manages "Pia Carrot 1st." His familial ties to the franchise persist through his wife and relatives, including cousin Kiyomi Kitagawa and sister Rumi, who remain affiliated with the restaurants.

Yusuke maintains a background presence in spin-offs like Welcome to Pia Carrot 2 DX, appearing briefly as a non-speaking adult character sporting a ponytail.