[2] Immediately after graduating from university in 1973, Otsuka started work at NHK, working at various regional offices, including Takamatsu, Hiroshima, and Nagoya, over a period of eleven years before being transferred to Tokyo.
[2] There, he presented TV programmes such as Sunday Sports Special (サンデースポーツスペシャル) and Quiz 100 points Full Marks (クイズ百点満点), as well as working as a commentator for baseball, football, and tennis broadcasts.
[2] Otsuka took a break from presenting Mezamashi TV in November 2011 to undergo treatment for acute lymphoblastic leukemia.
[3] He was released from hospital in October 2012, and made a live appearance on Mezamashii TV on 4 February 2013, after 15 months away from the screen.
[4] However, in March of the same year, it was revealed that Otsuka's leukemia had relapsed, and that he would not be presenting the show.