Complex sentence: The first issue was published October 1,1980, by "Kadokawa Shoten", but later issues were produced by "Asuka Shinsha" who bought the magazine for 200 million yen.
Split into simpler sentences: The first issue was published on October 1,1980 by "Kadokawa Shoten". Later issues were published by "Asuka Shinsha" who bought the magazine for 200 million yen.