Secret Garden Mimosa

Secret Garden Mimosa (純喫茶ミモザ) is a café in School District 14, Academy City. The café is permanently closed.

Necromancer Arc
In the anime, Esther Rosenthal along with Hitokawa Hasami (Huotou) performed a ritual at the closed café with her Emperor Shun's Blade as a countermeasure against the Rosenthals' artificial souls, specifically the Taowu possessing Hishigata Hirumi.

Trivia

 * The location where Esther performed a ritual with her blade is different than in the manga - in the open near a tree and somewhere were Hirumi apparently was before, rather than in a closed building with no apparent relation to their past.