Short answers, pulled from the story.
TV Asahi, then called Nippon Educational Television (NET), first broadcast at 9:55 a.m. on the 1st of February 1959. The station advanced its launch date by a month to beat rival Fuji Television, which had set the 1st of March 1959, as its own start date.
The station launched under a broadcasting license that required at least 50% of its airtime to be educational and at least 30% dedicated to children's educational programming. The name Nippon Educational Television reflected that founding mandate. By December 1960, after ratings fell below 5% and the educational model proved unprofitable, the station adopted the common name NET TV.
The broadcaster adopted the TV Asahi name on the 1st of April 1977, after The Asahi Shimbun became its largest shareholder following the Nikkei group's exit. The legal corporate name TV Asahi Corporation was adopted on the 1st of October 2003, marking the station's 45th anniversary.
TV Asahi's station director Koshiji Miura used a relationship with Ivan Ivanovich, head of the Japanese Section of the International Department of the Communist Party of the Soviet Union, to arrange a meeting with Soviet leader Leonid Brezhnev. The meeting secured exclusive broadcasting rights for TV Asahi, the first time a private Japanese television station held exclusive Olympic rights. Japan's boycott of the Games meant the broadcaster aired only select events and suffered significant revenue losses.
TV Asahi's current branding was created in 2003 by British design collective Tomato, whose members also form the electronic music group Underworld, working alongside TV Asahi's in-house design department. An earlier special logo introduced in October 1996 was designed by Tim Garvin, known for his Hollywood work on Dances With Wolves and Unforgiven.
TV Asahi has aired Kamen Rider since 2000 and Super Sentai since 1979. The original Kamen Rider debuted on the network in April 1971, joined by Metal Hero Series and Super Sentai, all produced by Toei. These productions broke the tokusatsu dominance that TBS and Fuji Television had held since 1958 through the Ultra Series franchise.