By starting a New Game +, you can access the GRADE Shop, where you can spend the GRADE you earned in your previous playthrough to purchase options for your next playthrough. (Note: New Game + will NOT be unlocked if you get the Bad Ending)
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1/2 Experience --> Pay 10 GRADE

10x Experience --> Pay 2000 GRADE

Double damage given and received --> Pay 150 GRADE

Double Experience --> Pay 300 GRADE

Hold up to 30 of each item --> Pay 150 GRADE

Keep battle info (i.e. encounters and max hits) --> Pay 50 GRADE

Keep befriended monsters --> Pay 200 GRADE

Keep items (gels, ingredients, and other durable goods) --> Pay 110 GRADE

Keep learned Artes --> Pay 350 GRADE

Keep learned Skills --> Pay 250 GRADE

Keep Monster Book data --> Pay 10 GRADE

Keep obtained titles (use this to get new titles if you did the Good Ending) --> Pay 50 GRADE

Keep play time --> Pay 20 GRADE

Keep recipes learned and titles obtained from recipes --> Pay 50 GRADE

Keep skit collection data --> Pay 0 GRADE

Keep your Gald --> Pay 200 GRADE

Receive more GRADE in battles --> Pay 20 GRADE

Set EXP to 1 and increase EXP BONUS --> Pay 50 GRADE

Start the game with 160 HP --> Pay 10 GRADE

Start the game with 500 HP (except monsters) --> Pay 50 GRADE