Oni Oni no Mi, Model: Kiro

The Demon Demon Fruit, Model: Crossroads is a devil fruit that gives it's user the powers of a crossroads demon. It also let's its user transform into a demon/human hybrid form and a full demon form. The fruit itself appears as a spiky yellow fruit that looks extremely unpleasant to eat. The fruit itself was described as tasting like rotting flesh.

Strengths and Weaknesses
The main strength of this fruit is the many powers it grants it's user. The user is granted enough strength to lift and elephant in human form. They are also granted unnatural durability, being immune to most devil fruit powers and shrugging off extreme temperatures, being stabbed, shot, or struck by lighting. The user becomes semi immortal as well, their aging process stops and they lack the need to eat, drink, or sleep. As a demon the user is granted extremely heightened senses, being able to hear, smell, and see further and better than any human. He also has the ability to generate fire or heat at will as well as the ability to teleport himself and others.

The most powerful gift this devil fruit gives the user is the ability to make deals with people. In exchange for something, usually the person's soul when they die, the user of this fruit can do a number of things. While unable to directly kill people they could create a fatal plague in the city they are currently in, sink and island, transport anyone anywhere, give someone riches beyond their wildest dreams, give them a devil fruit they desire, and the list goes on. When the user acquires someones soul they become able to summon that person to fight for them should they wish.

This fruit is not without weaknesses however. Though they are immortal in terms of not dying of old age, the user can die in battle or by drowning in water. Though the user is naturally immune to most powers they are weak to holy or angelic devil fruits, as well as light based fruits. They are also weak to purifying powers. Though they do have regenerative powers they cannot regenerate if touching seastone or the sea itself. They can be harmed by haki or seastone weapons and regenerate, but at a much slower rate. This forces them to retreat from battle if wounded too much. The standard devil fruit weaknesses also apply.