Shinri Shinri No Mi

A Paramecia devil fruit which it's meaning is 'Truth Truth Fruit'

Appearance
it looks like a grey apple

Strengths
by paying his own lifespan, the user can know, understand, anything that he wants, no matter how many are trying to hide a secret, it'll be discovered by this fruit's owner

Weaknesses
Aside of standard devil fruit's weaknesses there are many disadvantages of this devil fruit.

First, the more dangerous and important the truths that were discovered the more lifespan the user has to pay

Second, even though the user is able to know what will happen in the future, he is unable to interfere or change it