The Great Demon of Time and Space

I have an immortal body, and with a kind heart, I bring the person I like to my courtyard. Share my immortality with them so that they can enjoy eternal happiness. It's just like this, but it is characterized by the Space-Time Administration as the 'Great Demon King that disrupts the order of time and space', referred to as the 'Great Demon King of Time and Space'. This name not only made me wanted across the universe, but the management's top management also sent three magical girls who were always firing randomly to hunt me down. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.