Yes, there is!
http://www.neogaf.com/forum/showpost.php?p=205828775&postcount=995
Fighter - 28 (if you want genocide)
Knight - 21 (for the defensive passive)
Samurai - 19 (for carnage back or whatever its called)
Wizard - 27 (for master cast x 3) - 14 (for high cast x 2)
Cleric - 26 (for holy spirit, this you most def want the knight to have or other classes you dont want to die) - 25 (if you just want both mana regen passives)
Ranger - 28 (for hunters secret, a basic must if you want to make the fighter / dancer be more efficient at dealing damage with its skills) - 13 (for the skill token + pin down - dodge / hit debuff attack can be used with other weapons)
Ninja - 15 (for utsusemi or whatever they call the localized name, the hiding stuff you can skip as it wastes turns, unless you are trying to go for a pure crit character)
Dancer - 23 (for star step for melee characters as its 5 attacks on a single target) - 18 (for trick use II, use a single item 3 times. Uses 3 of selected items.)