the term wolf has many meanings, but is often used for treachery, cruelty, and general maliciousness. For Ai, she traded on the BO, therefore treacherous, and cannot be trusted. Sera may simply be a little cruel in her methods. The BO is malicious and cruel and travel in a pack. This word is thrown around often and may be a red herring to readers. Just know we have seen a little cruelty from Sera in the bombing case. This word probably means different things for different people...