Short answers, pulled from the story.
TV Asahi was founded on the 10th of October 1957, when Tokyo Educational Television held its first shareholders meeting. The entity was officially named Nippon Educational Television on the 1st of November 1957 before signing on the 1st of February 1959.
TV Asahi was originally named Nippon Educational Television on the 1st of November 1957 and changed to NET TV in December 1960. The corporate name became Asahi National Broadcasting on the 1st of April 1977, and the channel was renamed TV Asahi on the same date. The company officially changed its name to TV Asahi Corporation on the 1st of October 2003.
TV Asahi is headquartered in the Roppongi Hills complex in Tokyo, which was selected as the permanent home on the 1st of November 1957. The station moved its head office from Ark Hills Studio to Roppongi Hills on the 29th of September 2003.
TV Asahi began producing and airing groundbreaking superhero series such as Kamen Rider and Super Sentai in April 1971. These tokusatsu productions ended the long-standing duopoly held by TBS and Fuji Television and established a unique identity for the network.
TV Asahi started to broadcast in color TV in April 1967 and completed the transition to color broadcasts for all programs by 1969. The station also began broadcasting programs with stereo audio on the 17th of December 1978.
Hiroshi Hayakawa became the president of TV Asahi in 2009 and was the first president to have served the broadcaster since its inauguration. The station is currently led by a president who has been with the company since its founding in 1957.