Chiyu Chiyu no Mi in One Piece

Mansherry was captured by the Donquixote Pirates and was being kept hostage to keep the dwarves in line and also to use her healing powers for emergencies. They made her heal and revive their executives but she refused to help them until she was forced to cry, which revealed that her tears can heal people.

After Mansherry was rescued, Giolla said that her power could restore the SMILE Factory in case it was destroyed, knowing that in doing so, Mansherry's lifespan would be reduced. Trebol also said that Mansherry's power can restore the factory after it was destroyed.

As the fruit hasn't yet been shown in the anime, we don't know a lot about its appearance.

The major strength of the devil fruit is that it allows the user to heal any living being that is wounded or injured. These healing powers are manifested in the form of tears from the user's body. As soon as they touch the wounded human, they're restored to perfect health and can even recover people who have major shocks. The user can also create water in their palms which carries the same healing properties. This power doesn't have a limit on how many times it can be used. It's unknown if the power can heal diseases. The user can also restore damaged inanimate objects, but in the process, their lifespan gets shortened.

Even though they are able to heal body parts, they cannot create them from scratch. The power only works if the user makes contact with the recipient to work. They also cannot force their tears to not have healing powers. This makes them an easy target for exploitation. Other than that, they have the standard devil fruit weakness, that is the inability to swim.

Mansherry is able to make healing water from her palms with the help of her fruit's power. She also uses a watering can to apply her tears on her patients.

The techniques used by Mansherry are:

Chiyupopo

In this technique, Mansherry releases dandelions that are made of tears that temporarily increase the healing rate of whomever they make contact with and allow them to not feel pain.

Kenpopo

In this technique, Mansherry grows dandelions with healing properties out of their body, which are stored and given to people in need to heal any wounds instantly.

Q. What does ‘Chiyu’ mean?

A. Chiyu in Japanese means ‘healing’.

Q. Who ate the Chiyu Chiyu no Mi?

A. Mansherry ate the Chiyu Chiyu no Mi.