While many other characters have a younger generation counterpart in One Piece, who will follow in Sengoku's footsteps?

Some characters have haki so powerful that it can split the sky in One Piece. Here are the characters who can make use of it.

Shamrock Figarland's sword possesses the Cerberus Devil Fruit, a Mythical Zoan ability. Inanimate objects in One Piece can ...