Saeki Daichi was born in Tokyo on July 19, 1990. He graduated from Rikkyo University's Department of Modern Psychology.
In 2009, he got the second prize for the Mr. Rikkyo Contest. In 2010, he was selected as a finalist for HoriPro's sponsored newcomer audition "Campus Star" and would go on to debut as an actor that same year. He is currently signed with HoriPro.
