Tapping on the “READY” button takes you to the Ready screen - this is where you prepare yourself for the song by selecting what cards you wish to equip. You can also change the Stage Movie according to your preference.

To change a card while playing this particular song, simply tap on one in the Ready screen, then tap on the card you want to use, then tap on “Equip” on the window that pops up.
<aside> 💡 You might want to use this feature for leveling up a specific card.
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For example, we’ll change the S.COUPS card:

After you tap on the S.COUPS card on the Ready screen, you’ll find all of S.COUPS cards in your inventory. Simply tap on the card you want to change to and then press Equip.
You can also automatically equip cards by highest Card Stats possible (including any Recommended Theme Bonus). To do that, tap on the “Recommended” button.
<aside> 💡
If the “Recommended” button is not available, it means that you have already equipped the cards with highest Stats.
</aside>

It will then bring up a pop-up window. Tap on Confirm to continue.

The bar below your Performance Cards in the Ready screen indicates your Potential Score - the Score Grade you could potentially get with an All Marvelous clear.

This bar also acts as an indicator for certain Chapter Stage levels’ clearing requirements.
There are six Score Grades and these are mainly linked to the Music Challenge Rewards.
To get a particular score grade, you need to get a particular average of Card Stats of the Performance Cards you’ve equipped. Please refer to the table below:
| Score Grade | Avg. Card Stats needed |
|---|---|
| C | 1 |
| B | 30 |
| A | 90 |
| S | 175 |
| SS | 265 |
| EX | 350 |