The Akashic Records are a live database of player and character information. Any time a character logs into the Netslum server it is logged to the Akashic Records, along with information about that login such as Class, Level, Treasures gained and more.
To use the records, simply type the name of the Character you wish to search for into the search box above. From there, you can view any characters matching the search terms. Once on the page for a character, you can also view the names of any other characters that are owned by the same player.