Takeshi Gojo

Sana's birth father, but he does not know it. Spoiler Sana is briefly blackballed in the entertainment industry, due to a ruthless talent agency who tries to take Sana away from Rei. During her dry period, she takes the only job she can get, a small role in a low-profile drama. Mr. Gojo is the small-time actor who plays her father in the movie, and Sana feels an instant connection to him, and begins calling him "Take-chan." They become very close during the filming of the drama without being aware of their true relationship to each other. He eventually finds out his true relationship with Sana, but by that time, he was stricken down by a chronic disease and was dying. However, he still managed to get back to the set and completed the climax scene of the drama. But, his disease overtook him, and he died holding Sana in his arms, promising that he will always be with her. (Source: Wikipedia)