"Many years ago, adventurers protected the last Ancient Tree of Life of the elves, so they had a special relationship with adventurers. Originally, there were strict rules against all races, but to adventurers, there was another special privilege."
"Despite the taboo of the elves, if anyone wants to form a relationship with the elves, they must be adventurers."
"However, because the era is too ancient, the requirement for this possibility has become higher and higher. To this day, many High Elves do not want to acknowledge this rule, but because of this history, it is impossible to erase. However, they have also thought of a way to let adventurers who want to be tied to the elves pass a very difficult test."
"Only by passing this test can you obtain the recognition of the elves. With this mark, it's equivalent to the elves acknowledging your ability."