What's the reward for dodging 200 bolts?

You get the Venus Sigil for Lulu's ultimate weapon. Tried to dodge more to see if you get anything else but only made it to 260+something and never tried again.

P.S. Go to a room where no one will bother you, switch off the lights, equip an armour or a weapon with the No-Encounter ability, don't blink for an hour and you have many chances of doing it!