Frau Faust Vol. 4 (Kodansha, 2018)

After a surprise reappearance by a recently defeated demon, Johanna and her companions find themselves under attack. The demon Ino has been ordered to capture Dr. Faust, and this time, nothing will stop Ino from accomplishing her goal. Soon, Johanna finds herself in the heart of enemy territory, but the Doctor's smirk as she faces her captors seems to suggest that the series of events leading to her defeat may have all been according to plan...