Black Clover episode 136, "A Black Deep-Sea Story," is an anime-original installment where Noelle Silva and Finral Roulacase return to the Seabed Temple for training to battle the Spade Kingdom. Noelle manages to calm a rampaging Sea Guardian using her Valkyrie Dress, receiving a heartwarming vision of her mother, Acier Silva, in the process. Read the full episode summary on the Black Clover Wiki .