Full-Time: Summon an Angel at the Beginning

Staying up late chasing a sudden death, entering the world of a full-time mage and being torn apart by thunder and fire. When I was about to die, a woman in white appeared out of thin air and tapped my eyebrows to seal the rampaging stardust. She called herself a fallen angel and said she wanted to take me on as her apprentice. But I remember that in the original work, there was no such character at all.