美少女戦士セーラームーン

Following the Makai Tree incident and the departure of Ail and An, the five Sailor Senshi enjoy a newfound period of peace. With no enemies to fight, they return to their colorful, but ordinary, daily lives. But one night, Luna and Artemis sense several mysterious shadows releasing dark energy – energy like that of a Youma. Could the vanquished Dark Kingdom have somehow returned? The Senshi have dark secrets to uncover, and enemies old and new alike to face…if they can ever stop goofing off at the arcade.

[From Romhacking]