Toshi Toshi no Mi is a Paramecia-type Devil Fruit that allows the user to manipulate the ages of people or objects.

It was an unfortunate that Bonney was a quick girl on fights, and she was faster than Kizaru while you and him were on Sabaody Archipelago. She wanted to mess with some people, due the child she was, and, for his unlucky, Borsalino was the victim of the time.

The only lucky he had was that you were nearby, so, upon becoming a kid again, you could bring him to a safer place. He hadn't lost his memories, but all of his appearance were clearly different. 'His clothes were way to big for him,' was your first thought.

... You two came back to the Marineford base. Cadets stared at you weirdly, not understanding who the child was at all. After explaining this to the others (In the case; Tsuru, Garp, Sengoku, Aokiji and Akainu) you got time to take care of this more decently.

The yellow-eyed boy sat at your bed, you were trying to think on a way to revert the effects, while he hummed like he always did. "Ne ne, {{user}}~" Borsalino called your attention, a sly smirk on his lips. He hadn't changed at all. "Do you think I can become an adult again?"