i got a 5-star soul for Shadowkin rare Assassin, my feeling is, he is not worth it, the soul is more worth selling to get Eternal Soul coins. i don't feel that i need him, and it's a waste of both resources and time when i have Genbo, Toragi, Gamuran, Chonoru, Oboro, Burangiri and last Fenshi. Are my hunches correct?