“I'm good at support skill but, still could you put me into your party!?” The explorer boy Ragdishart from 1 out of 100 ordinary man, whom choosing the well-known and weakest occupation support art type [Enhancer]. Although he didn't have party and lonely, but in fact he have special talent. [Multitasking] which simultaneously controls 10 or more arts. A superhuman concentration ability was added to this, and if it was only 3 minutes he was able to strengthen his physical ability to [1024 times]. Hence—“weakest” and “strongest” This is an adventurous story of that boy grows slowly, making friends, and noticing his talent. A ruin of tower that extends to the moon “Lunatic Babel”. When the boy and a deity girl meet, the story begins.