[3] In 1988 he worked on the storyboard for the fourth OVA episode of Bubblegum Crisis, along with Masaki Kajishima.
In his AIC interview, he said that he wanted to carefully produce it, learning from his experience from Tenchi Muyo!.
[4] Hayashi was inspired to create Black Heaven after hanging out with his friend at a 24-hour udon restaurant where he noticed many middle-aged businessmen and their interest and enthusiasm over the Lupin the 3rd film.
He also enjoyed music and was inspired by a pub owner who gave up his dream of being a pro guitar player to do his business.
In his AIC interview, he said that it started as some experimental CG work, but he thought it would be better to present it as a story, and so he developed that.