A-20  

In the game world of The World, A-20 is a young female Twin Blade who, through her carelessness and motivations for playing, helps Mimiru understand her own reasons for engaging in the game. It's revealed that A-20 joined the game due to its popularity among her classmates and her desire to prove herself by completing a challenging dungeon. In real life, "A-20" refers to her student number at school, along with numbers 1 through 19; her peers who are only mentioned. After obtaining a rare Golden Grunty item (which she describes as unattractive), A-20 decides to collect them. She later continues her adventures in The World alongside Mimiru on occasion.