Short answers, pulled from the story.
TV Tokyo is a Japanese television station that serves as the flagship of the TX Network. It broadcasts on digital channel 7 and is headquartered in the Sumitomo Fudosan Roppongi Grand Tower in Roppongi, Minato, Tokyo.
TV Tokyo is owned and operated by TV Tokyo Corporation, itself a subsidiary of TV Tokyo Holdings Corporation. TV Tokyo Holdings is in turn controlled by Nikkei, Inc., the media group behind Nihon Keizai Shimbun.
TV Tokyo's predecessor, Tokyo Channel 12, officially launched at noon on the 12th of April 1964. The station took the name TV Tokyo in 1981.
In its first year of broadcasting, Tokyo Channel 12 averaged daily ratings of only 1% and prime-time ratings of 2%. The station recorded a deficit of 1.38 billion yen in that first year.
In 1969, Nihon Keizai Shimbun (Nikkei) invested 600 million yen in Tokyo Channel 12 Production Company, becoming its largest shareholder. Nikkei has controlled the station's parent corporation ever since.
TV Tokyo's mascot is Nanana, a cartoon banana with eyes, a nose, and a mouth that is bent into the shape of a 7, reflecting the station's channel 7 identity.