These images originate from a 1999 CD-ROM released by Software Sculptures in English, based on the original Japanese release published by Lyceen.
The original format of the images was Apple QuickDraw PICT and were converted to JPG using ImageMagick for this upload.
The ISO file of the CD-ROM can be found on Internet Archive.
Credits for the CD-ROM:
Producer: Noriyasu Kainuma
Planner & Art Director: Jiro Tanaka
Character Designer: Masaki Yamada
Graphic Designer: Yoshihide Kubo
Programmer: Felix
Editorial Director: Shinichiro Ozeki
Music: Tatsuji Shimooka
Executive Producer of English Version: John O'Donnell
Multimedia Producer of English Version: Henry Lai
Multimedia Designer: Chian Shen
Package Design: Sara Erickson