Patchwork Lab (ツギハギ研究所, Tsugihagi Kenkyuujo), also known as Stein Research Institute (スタイン研究所手術室の翻訳は, Stein Kenkyūjo Shujutsu-shitsu) is the home and research center owned by Franken Stein.[1]
The interior of this location changed overtime, having changed between depictions from Soul Eater and Soul Eater Not!, the latter having been chronoically released more recently.
