The Akimichi clan is a bloodline of Hidden Leaf ninjas that are able to rapidly expand parts of their body by turning excess calories in their body into chakra. Because of this, they tend to be obese people.
The Akimichi Clan is one of the four noble clans of Konohagakure. Due to their unique ninjutsu that can increase the size of their bodies, they have to consume large quantities of food. They have special bonds with the Ino and Nara clans forming trios each generations. These trios are known for their great teamwork, utilizing each unique technique to their fullest capacity. Once each member in the trio reaches Chunin level, they receive a pair of earrings, symbolizing adulthood.
The clan main trademark is their ability to converse their calories into chakra which enables them to transform any limb of their body to gigantic sizes including their whole body. They might use a special pills to make them more powerful but with a side-effect that might endanger their lives. They also have special rods that also enlarge with the user.