Marie no Atelier Plus - Salberg no Renkinjutsushi © 1998 Gust.
GAME ID: SLPS-01418
Released on June 04, 1998 in Japan. It was never published outside Japan.
The original game featured six different endings. A seventh ending was added this Plus version.
Re-releases:
[JP] "Marie no Atelier Plus - Salberg no Renkinjutsushi [Model SLPS-91179]" (1999)
See Goodies section.