Tick MU Boutique: how to buy F.O Wings. This is how the wing options work in the Boutique:

• Tick the first 4 options to get FO Wings with the HP Recovery option.
• Tick the first 5 options to get FO Wings with the Additional Damage option.
• Tick the first 4 options plus the 6th option to get FO Wings with the Additional Defense option.