Arcus Family
A few hours later, Ryuu and Master Izaria landed in Arcfield City, a city controlled by the Arcus Family. The Arcus Family is a fairly renowned power on a similar level as the Lionel Family Mira encountered. They have several Mortal Shedding Realm experts, a dozen or more Soul Transformation Realm, and many Nascent Soul Realm experts.
However, in terms of battle prowess, the Arcus Family is weaker than the Lionel Family, considering they are a merchant family, but that doesn't mean they aren't strong.
Only the strong can accumulate wealth in this world; if they didn't have the power to protect themselves, they would have already collapsed.
Of course, one can't discredit their connections either. As a merchant family with close ties with many other cities, families, powers, and strong individuals, the power they show on the surface is just a cover.