guessing by whale you mean someone who drops alot of money in?
i have only put 5$ in and have been playing 2-3 weeks. just got lucky with a jade ticket for her and UR upgrades from plat spins.
(edit:just looked up whale, i have played mmos but not socially, most likely why i haven't run across that term before.) so not a whale, just insanely good luck
i have my wpn and armor maxed to 33 (current lvl) so i guess legend book of han and zen flute will be next
it is, fighting lvl 55 sanada yukimaru in the beach campaign. almost beat her but her corsairs reflect is brutal