Dragon Raja: Lu Mingfei finds a Freylian

Lu Mingfei, the number one loser in Kassel, had his life-changing moment when he picked up a white-haired elf at the arcade!
"My name is Frilian, and I come from the magical world," the silver-haired girl said, munching on his potato chips and casually patting his head.
"Miss, are you sure you haven't got the wrong person?"
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However, this was only the beginning of a nightmare!
Now he not only has to slay the dragon, but also:
✓ Teach the Millennium Spirit how to use a smartphone (as a result, she spent all his living expenses on it).
✓ Stop her from taking the forbidden hot instant noodles (the kitchen explodes for the nth time)
✓ Justifying the "magical girl" concept in the mission report (Professor Schneider has already drawn his sword).
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The most terrible thing is--
“The bed is mine,” Frillie said, clutching her pillow with a self-righteous air.
"Then where will I sleep?"
"To be my body pillow~"
(Lu Mingfei: Norma! Quickly book me a ticket to escape Earth!)