The titles reasoning of appearance were unknown, all the humans know was during 2030, all of the students magically appear having 'The Titles' power, having abilities beyond any mankind as of then. What was slowly discovered and learnt was not only the origin, but the way to obtain them.

Humans have discovered that this 'Titles' have the ability to overwhelm each other, such an example is, a person ranked The King in his previous life, can control another person to a certain extent(excluding killing). The part where killing was forsaken drived the first batch of Titles, also now known as 'The Lost Ones',  they went so wild that most of them died before 20. The last remaining one was unfairly the one with the most power. What was discovered then told the current humans that as long as a persons 'Title' was rank much MUCH higher, killing them was an option. Which drove humanity insane. If it wasn't for the fact 'Titles' doesn't work on people without Titles, the humans then, wouldn't have been able to swiftly controlled and taken precaution of 'The Titles'.

Soon, ways of unlocking 'The Titles' power was discovered, likely the creator thought it would be hilarious to be shaped as a crystal ball, thus, began the much torture to the reference.