- It is called the Inu Inu no Mi; Model Honshu Wolf in the Japanese version.
Being an S.A.D. Devil Fruit, the Dog-Dog Fruit: Honshu Wolf Model is shaped like an apple, but instead of the signature swirling pattern on typical Devil Fruits, this one is dark red and covered in yellow polka dots. It is implied there might be more than one.
Strengths and WeaknessesEdit
The fruit's major strength, as demonstrated by Aika, is that its user gains more physical strength in their hybrid and full Honshu wolf form, equivalent to that of an actual wolf and more. Due to being a child, Aika's hybrid does not change her height or muscle mass, but Aika makes it up for it by gaining more speed. In her full animal form, she is more adapted to traveling in more rugged terrain.
As stated by Tony Tony Chopper, animals of the Carnivorous Zoan are more predatory and bloodthirsty than others nature and as such, tend to be better adapted for combat. The only time Aika has ever used her full animal form for fighting is when she is in her Berserker Mode, which causes her to attack in a feral rage and unable to differentiate between friend and foe.
Outside from playing, Aika uses her full Honshu Wolf form to trek through rugged terrain, such as forests and tundras. She also uses its superior sense of smell for tracking and hunting (even though she doesn't exactly eat her quarry). The only time she's used it in battle is when she is in her Berserker Mode, and when she is in this state, she gains a rush of adrenaline, but cannot tell the difference between friend and foe. She literally turns into a wild animal, attacking anything in sight, as demonstrated when she attacked Kumi in Dressrosa. However, she usually faints after using.