Several days after they possessed Aqua, Megumin once again requested that she wants to try Darkness's body next. When Kazuma told her that not even him and Chris could overpower Darkness's indominable will, Megumin offered her help.
The next day, Megumin went to Darkness and and began teasing her body nonstop for the next hour. Once Darkness's guard was lowered, Megumin called in Kazuma and the two of the shiftly entered Darkness's body, successfully possessing her. Darkness, unable to stop what was happening, repeatedly begged Megumin to stop. However, Megumin had already made up her mind and soon took over both Darkness's mind and body for herself to enjoy.