Here's a thorough guide to get through TTF more quickly when fighting Vol Opt in phase one, especially in Ultimate mode. This special technique is called the Gizonde glitch.
Equip a V801 first, and use the Gizonde glitch to stun lock this boss when it tries to move through the screens. The more...
Pretty straight forwards, found one in my bank after not playing for quite some time.
I'll take PDs, some AddSlots, a V801, or just make me an offer.
Cheers,