Cap 136: Blood pact

Right now I'm talking to the mysterious woman inside my dreams, she's telling me that I have a sealed ability that doesn't even show up in my status. 

  "What do you mean sealed skill?"  (I) 

  "At the time of your first evolution, I granted you the [ Evil Leech Covenant ] ability."  (mysterious woman) 

  "That ability was sealed the moment it entered you, I was surprised by that at the time."  (mysterious woman) 

  "You mean I would seal my own ability?"  (I) 

  "No, it sealed itself off, something in you made it start a process of evolution, just like a caterpillar enters a cocoon to turn into a butterfly your ability connected with something in you and started the process of evolution."  (mysterious woman) 

  "This is an automatic process for all skills when they meet certain requirements, but in your case it was different, this skill hadn't met all the requirements it needed so it was sealed."  (mysterious woman)