The Strongest Immortal in the City

I was sitting in a helicopter cabin with an old man who was immortal. Suddenly the plane lost control and the old man handed me a parachute. He took out the rusty sword behind him and patted me on the shoulder and said: "Young people must believe in science." Immediately, he jumped out of the plane without blinking an eye and left with his sword. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.