Septeni Holdings Co., Ltd. engages in the provision of digital marketing and media platform services. It operates through the Digital Marketing and Media Platform segments. The Digital Marketing segment offers digital transformation of companies, centered on digital marketing, provision of solutions utilizing data and artificial intelligence, and marketing support through online and offline integration in partnership with Dentsu Group. The Media Platform segment includes manga contents, recruitment platform, social contribution platform, and childcare platform business. The company was founded by Mamoru Nanamura in October 1990 and is headquartered in Tokyo, Japan.