Tokyo: My Girlfriend Is the Demon Lord

Once a brave hero who saved the entire continent, an all-powerful savior, Yu Amamiya is now just an unemployed corporate drone living alone in Tokyo.

That is, until the day the Demon Queen he personally defeated in another world suddenly appears in his home and declares:

"I will make you a hero again, then defeat you with my own hands!"

To avoid trouble, Yu Amamiya is forced to start living with her.

As their days grow happy and peaceful, the former Demon Queen begins acting all bashful.

"Wait, we're sworn enemies! Sworn enemies can't become husband and wife!"