Takeshi Gojo, Sana Kurata's biological father, appears exclusively in the anime adaptation. He works as an actor, primarily in minor roles due to a chronic illness forcing him to abandon commitments prematurely. His physical traits include dark blue hair, brown eyes, and signature glasses. Takeshi exhibits a calm, humorous demeanor mirroring his daughter Sana, speaks slowly to comfort others, and enjoys unconventional surprises. Professionally, he believes his inability to complete projects confines him to smaller roles.

He deeply loved Keiko Sakai and regrets leaving her for a Hollywood career, unaware she was pregnant with Sana. After Sana's birth, Keiko abandoned her in a park, leading to adoption by Misako Kurata. Takeshi remained unaware of Sana until their reunion through shared acting work. They develop an exceptionally close bond. When reporters speculate about their relationship, Sana jokingly declares them lovers, and Takeshi willingly plays along. He states Sana revitalizes his passion for acting, reigniting his early-career enthusiasm. His devotion culminates in successfully protecting Sana—the first commitment he completes.

Takeshi's death triggers Sana's severe emotional breakdown. During this period, she publicly slaps a film producer mocking Takeshi posthumously. His sacrifice and absence profoundly impact Sana's emotional stability.

In canonicity, Takeshi exists solely in the anime continuity; the manga establishes Keiko's deceased uncle as Sana's father in Chapter 17.