Zero no Tsukaima - Volume 1 s1Chapter 3

You, yes you! It's you! Why are you running? Run, keep running! Why don't you run anymore!Do you have an Otherworldly Affairs Office pass?And selling this world’s goods, did you pay the taxes?I don't care if you're the head of an Immortal Sect, put your hands on your head and squat by the wall! Prepare for inspection!

When the system warned the world that it was coming a week in advance, Alex couldn’t have been more excited. In college for a degree he didn’t care about to get a job he didn’t want, the promise of a world where magic and challenge awaited — even at the potential cost of death — was the best news he possibly could have imagined. Alex was ready for a new life. He ready for his only friend to shove him through a portal into hell the moment the apocalypse started. Instead of getting to punt rabbits and farm wolves, Alex finds himself stranded in a warped world where even the bugs are stronger than he is. Even with a summoner class that gains the powers of its monsters, most people would have died. Alex didn’t get the memo. He might have liked challenge a little bit too much. Where others saw certain death, he found something else. Opportunity.

He was very happy to be reborn, but why was he sixteen again, he can’t bear to look back at that time.

Why does he return to being sixteen years old, yet still meet Doomsday?

It’s alright to encounter the end of the world, so why did he have to fall in love with someone?

Even if he falls in love with another person, why did it have to be a man?

Falling in love with a man is also alright, so why did it need to be a secret one-sided love?

Even a secret and unrequited love is alright, so why is that man his….

- Description from Novelupdates

“Mr. Xu, are you really a Heavenly Master?”

“As genuine as they come, more real than gold!”

“I’ve heard that your reputation in the supernatural circle is really bad, even to the point where a ghost once called the police saying you were threatening him?”

“Impossible!”

“It wasn’t me!”

“Don’t talk nonsense!”

Xu Yang clenched the Thousand-Year Peachwood Sword in his hand, and said, “What’s the name of that ghost? Would you dare to let him confront me face to face?”

(PS: This book is also known as ‘This Heavenly Master is too Vicious’, ‘Scaring Ghosts Makes You Stronger’.)