銀河お嬢様伝説ユナ ハイブリッドコレクション is an omake cd for Windows 95/Macintosh from 1997 that contains an adorable image gallery, icons, voice snippets, and even a screensaver!
Galaxy Fraulein Yuna is a series about power armor suited girls battling evil across the universe. Designed by Mika Akitaka who also did work on Gundam. The games are for PC Engine, PC-FX, Saturn, PSX. But it was common to make a pc companion disk with fanservice stuff like this.
LINK https://archive.org/details/galaxy-fraulein-yuna-hybrid-collection-CD-ROM