An accident turned the powerful black dragon into a cute little kitten. What he couldn't stand the most was that he was actually kidnapped by the white guys and Toho in his own territory, and they tyrannically treated him as Toho's exclusive pet and kept him in the alien house...
Yes, this kind of life may be good. Being pampered every day, not having to worry about the Double Dragons and the Empire, just living a leisurely life every day, is not bad either...