Play a number of quests to unlock items.

Item	How to unlock
Gold Hoop	Win 100 VS Matches (any type)
Pegasus (+15 D Weapon)	Complete 100 Quests.
Silver Hoop (+5 Atk +5 Vit +5 Mind Accessory)	Complete 500 Quests.
True Mars (Weapon, Flare P+32)	Clear 1000 Quests
True Seraph	Complete 100 Coop Quests
True Unicorn	Win a VS match.