Oto Oto no Mi in One Piece

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

The user can transform their body parts into instruments and can play specific notes and tunes and the user can release damaging effects to their enemies. The user can use a wide range of attacks and also the user can form physical strikes like punches and slashes.

As the attacks come in sound waves which travel at very quick speeds, it can be very difficult to recognize and dodge an incoming attack. Anyone who is within the range of the user will be affected by just by even looking at them. The fruit's abilities only work if the user's target can hear the music.

This devil fruit doesn't affect Logia users who can easily transform after being struck. If the user enemies cover their ears then the user's technique is useless. Other than that they are affected by the standard Devil Fruit weakness that is the inability to swim.

Apoo uses his devil fruit powers for combat purposes. He doesn't directly confront his opponents as he just starts playing his music while his target focuses on something else. This allows him to wound them before they can attack. He likes to work with his devil fruit in secret and gets annoyed when his tactics get figured out.

The techniques used by Apoo are:

Tatakau Music: Scratch

In this technique, Apoo turns parts of his body into various instruments and starts a musical number on which he raps while emitting musical sound to carry out his attacks.

Shan

In this technique, Apoo turns his jaw into a cymbal and plays it by pushing down his head. With this he releases a sound wave that causes his targets to get sliced up.

Don

In this technique, Apoo turns his chest into a drum and hits it with his fist. He then releases a sound wave that sets off an explosive from the inside of the target's body.

Bon

In this technique, Apoo turns his forearms into strings and plucks them which releases a sound wave that causes the target to suffer.

Q. What does 'Ote' mean?

A. Ote in Japanese means 'sound'.

Q. Who ate the Oto Oto no Mi?

A. Apoo ate the Oto Oto no Mi.