Okazari Materials can be exchanged, though thier amount they return is small (about 30 fuel per Okazari Material). If you have completed the quests and are performing present hunting, it may be recommended to exchange them for fuel till the end of the event.
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Leftover Okazari Materials can be exchanged for fuel, though thier amount they return is small (about 30 fuel per Okazari Material). If you have completed the quests and are performing present hunting, it may be recommended to exchange them for fuel till the end of the event.