Since high school, Tomoka has been active as a net idol with moderate popularity. Often skipping school, she dedicated her free time to idol activities, eventually starting professional work such as gravure appearances in weekly magazines and small live performances. However, her CD sales didn't perform well, and from that point on, she was increasingly pressured into "sleeping her way to the top." Fearing loss of work if she refused, she reluctantly agreed. While she'd had almost no boyfriends before, during her net idol days she attended an offline fan meeting, was taken home by a man, and lost her virginity to him. After that, she continued relationships with older men under the guise of "networking." She enjoys being photographed and filmed, finding excitement in visiting various locations. When offered an AV job this time, she did hesitate, but ultimately concluded it was similar in nature to her previous "networking," leaving her with no choice but to accept.