Acchel World is a series of bonus OVA shorts found on the second disc set of Accel world.
Acchel world is a parody of Accel World that has lower quality animation with the characters animated as chibis. Unlike Accel World, Acchel world is more light hearted and comical. The humor is mostly surreal humor.
Many of the characters from Accel World star in this series Haruyuki Arita (in his pig avatar)
Kuroyukihime (in the form of her avatar)
Chiyuri (portrayed as and referred to as "cat-girl")
Takumu (portrayed as a human with screws in his head and referred to as "screwy" by Kuroyukihime)