Seikai

Seikai (西海, Western Sea), otherwise regarded as Seikai of the Strike (殴打の西海, Ōda no Seikai) is a powerful master of Hakuda and a member of the Yonmi (四海, Four Seas), previously regarded as the Four Perils (四危険, Shikiken). He is the guardian of an unnamed family within the Four Great Noble Families.