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Balance Ranges

A-Tier Classes

S-Tier Classes

There are none. Don't be fooled.

Strategy

The strongest character in the game, by far, is Ashura. Rush to Ashura ASAP on 4-6 of your characters and the game will be easy.

If you want a more balanced team, you can build a defensive frontline of Elite Guards and even splash in some levels of Saint on them for party-wide healing. But this is not strictly necessary.

Remember that every rebirth adds to the total amount of EXP needed to gain levels. Unlock your preferred class first, and then spend time rebirthing within that class to maximize stat gain. A-tier units generally do provide the most stats-per-exp-cost when rebirthing, although the different isn't huge.