This is the trademark ability of the Akimichi clan. When performed, the Akimichi grows in size, proportionately increasing their weight and strength and thus making their physical attacks more powerful.[1] Clothes they're wearing will change in size to accomodate them, as will certain weaponry, such as the bo.[2] Such a significant change in size places a great burden on the user's body.[1] In keeping with this, users typically are not seen maintaining the Multi-Size Technique for long periods of time, instead reverting back to their normal form after they've concluded their series of attacks.[3] During the Fourth Shinobi World War, Chōza and Chōji Akimichi at one point seem to use the Multi-Size Technique for several hours.[4]

There are two ways the Multi-Size has been depicted in the series. The first is where the user becomes extremely round, with most of the body's expansion being applied to their torso; because this is what happens to Chōchō Akimichi when she uses it, she dislikes performing it.[5] The second is where the user simply becomes larger, bigger than their normal size but not so big as when they use the Super Multi-Size Technique.[6] Chōji uses the first during Part I and the second during Part II and onwards, suggesting the user's age or experience has something to do with it.


  • During the Fourth Shinobi World War, use of the Multi-Size Technique is shown to produce extra markings under the user's eyes.[6] Such markings are not present in earlier depictions.


  1. 1.0 1.1 1.2 Rin no Sho, page 215
  2. Naruto chapter 137, page 9
  3. Naruto chapter 337
  4. Naruto chapter 536
  5. Boruto episode 59
  6. 6.0 6.1 Naruto chapter 537