A devil's fruit! [He adjusts his gloves, and holds an ember in the middle of his palm.] In our world, we have these rare fruits that in exchange for your ability to swim, it grants you a unique power. No.. two powers are the same and Ace had obtained the Mera mera fruit, which was the ability of be of the element of fire.

[He shakes his head on the question that Momo asked.] He wasn't a sailor. Ace was actually a pirate.. who sailed along the Grand Line as part of his crew, the Whitebeard pirates.

[Sabo then looks toward Momo, smirking a bit.] He was pretty strong. ... Though I'm curious as well. Who is this someone you know of?