Pledge Your Loyalty, Magical Girls

Lu Wei transmigrates into a magical-girl world as a low-ranking combatant in a villainous organization. He only wants to coast through life, but a demon chooses him as its Host.

If he's going to be possessed sooner or later, why not... have some fun first, then blow up with it!

So why didn't he die after blowing up, and why has he become the magical girls' one and only beloved?

What? You'd rather fall to darkness than stop following me?

Then swear your loyalty to me!