Once you defeat the 3 Gigantaur's head to the Nomad Village and change the weather to Rainy. (You may need to leave and come back too).
Talk to Tipur and he should give you this quest.

Getting this Fragment isn't hard at all, since all you have to do is have a SEN and a MED that can outheal the damage it takes. Getting 5 star rating on the other hand is where the challenge lies.
| HP | 317,200 | Chain Res. | 90 | Physical Dmg. | - |
| Strength | 587 | Stagger Pt. | 444% | Magic Dmg. | - |
| Magic | 685 | Keep | 40 | Fire Dmg. | x2 |
| CP | 1,600 | Launch | Resistant | Ice Dmg. | Absorb |
| Gil | 2,880 | Libra | 30 | Lightning Dmg. | - |
| Wind Dmg. | - | ||||
| Common Drop | Grasitha | 10% | |||
| Rare Drop | Gandiva | 5% | |||
- Be sure you have a Synergist has Bravery and Enfire, I suggest Thexteron.
- Be sure you have a Ravager has Fire-based attacks.
- Be sure you have a Medic has Cura. I suggest Flanitor if you are in the early part of the game. Later game players can use Green Chocobo.
Begin in Superiority (SAB, SYN, SYN) and cast Protectra, Vigilance and Veilga with either Noel or Serah and getting Enfire and Bravery from your SYN.
You want to take out the Microchu first, so switch to any paradigm with COM's and RAV's (and set to a -W paradigm type) and manually select two Blitz's. Finishing off any that are left afterwards.
With the Microchu gone, switch to an attack paradigm like Relentless Assault or Smart Bomb to build the Chain Gauge and/or cast Deshell and Deprotect Ochu. If Enfire wears, switch back to Superiority and back to Relentless Assault/Smart Bomb.
When Ochu uses Screech, switch to a healing paradigm and then go back to Superiority to refresh your defensive buffs. Once again, get Bravery and Enfire on everyone and finish him with Relentless Assault.
Note: If you are doing this post game, you can go all out on him with some heals.
The first time you beat Ochu you will get the Ochu Fragment and 30,000 CP.
