ソフィーのアトリエ ソフィーのアトリエ~不思議な本の錬金術士~
The 17th game in the Atelier series by Gust, and the first in the Mysterious arc of games. Character artwork is done by both Yuugen and NOCO (adamas). Gained a direct sequel with Atelier Sophie 2.
This tag implicates atelier_(series) (learn more).