Junichi Tanaka is a Japanese creative director and the original creator of the anime short series Mattsu to Yanma to Moburi-san. His professional background is primarily in advertising and branding, where he has worked on corporate and product commercials for major Japanese firms before expanding into video content aimed at both domestic and international audiences through social networking platforms.

Tanaka is credited as the original creator and screenwriter for the Mattsu to Yanma to Moburi-san franchise. The first work, Mattsu to Yanma to Moburi-san: Nanatsu no Hihō to Soratobu Oshiro (also known as Mattsu, Yamma and Moburi - The Mystery of the Seven Gems and the Flying Castle), premiered in 2013 as a tourism promotional anime short for Matsuyama City, the capital of Ehime Prefecture on the island of Shikoku. He continued in the role of original creator for the 2014 sequel, Mattsu to Yanma to Moburi-san 2: Suigun Otakara to Nazotoki no Shimajima (Mattsu, Yamma and Moburi - The Naval Treasure and Riddle Island), which focused on the islands west of Matsuyama City. For both productions, Tanaka is credited with the original story concept and screenplay, with Saku Sakamoto serving as director at the animation studio Robot. The series follows three children named Mattsu, Yanma, and Moburi on adventures through various famous locations and historical sites, blending fantasy elements with regional promotion.

Beyond these specific anime shorts, Tanaka has worked extensively in the commercial film sector. He has received numerous industry awards, including accolades from the ACC (a Japanese advertising awards organization), the JAA Advertising for Consumers Contest, the Short Shorts Film Festival and Asia, the NY Festival, and SPIKES ASIA. His expertise has also been recognized internationally, having served as a judge at advertising festivals such as ADFEST, SPIKES ASIA, and the Russia Film Festival.

Tanaka does not have any published manga works documented in available records, and his involvement in animation is primarily as a creator and screenwriter for short-form content rather than full-length television series or films.