>>280887899
just finished reading the supergal and i was trying to track down one of the images you posted, it's from
>shonen sunday graphic
and in the process of searching for that, i found that one of the other fire tripper illustrations you posted was also from shonen sunday graphic
furinkan elaborates a little more here
>https://www.furinkan.com/rumictheater/manga/about.html
>This is the companion book to the Firetripper OVA. The book, along with the other Shonen Sunday graphics are quite rare. It contains the entire Japanese script for the OVA, an ani-manga of Firetripper, sheet music for Presentiment, color Takahashi drawings from Firetripper, and a board game in which you navigate through the worlds of Firetripper, Urusei Yatsura and Maison Ikkoku.
i also found this nice scan of the fire tripper cover
>picrel
here's an ebay and mercari listing that shows some of what's inside
>https://www.ebay.com/itm/405876224668
>https://jp.mercari.com/item/m83363531730
>https://jp.mercari.com/item/m72866430451