A short ten minute OVA released with the DS verison of the game if it was pre-ordered. It was made from a failed script for the show. Sometimes referred to as Episode 5.5.
Kamina, Simon and Yoko are resting when Chitori sneaks up on Kamina and spray paints his glasses black. Kamina mistakes it for blindness and Chitori cleans the glasses for him. She offers to clean up Gurren, which Kamina agrees to, which results in her stealing Gurren.