ONA
Description
Berecca is a prominent character in the Ninjala anime and serves as the protagonist of the game's Story Mode Chapter 2. Before the events of the series, she was an adult researcher at the World Ninja Association Research Institute. For three years, she worked alongside her colleagues Burton and Ron to develop the secret substance known as Ninja-Gum, enduring over two thousand failed experiments in the process. Her dedication to this scientific work was deeply personal, as she was following in the footsteps of her late father, a WNA scientist who died in a laboratory accident in Oedo.

Her life changed dramatically when a successful prototype was finally created after a cat's bell accidentally contaminated the formula. Berecca and Burton eagerly tested the new Ninja-Gum, which granted them powerful ninja abilities. However, a significant side effect immediately became apparent: the gum transformed both of them into twelve-year-old children. This transformation was permanent, and Berecca, now in a child's body, resolved to find a way to reverse the effects. She entered the Ninjala Tournament with this goal in mind, seeking both a cure and a means to support herself financially.

In terms of personality, Berecca is defined by her quick temper, fierce competitiveness, and strong will. She is not one to back down from a challenge and has a tendency to be impatient and sarcastic, particularly in her interactions with the often-philosophical Burton. Despite this fiery exterior, she has a genuinely kind and caring nature, and she shares a close bond with Burton, acting as a supportive, almost older-sister-like figure to him despite now being physically younger. Her determination to uncover the truth about her father's death often pushes her toward recklessness, a flaw she herself acknowledges, as she has a habit of ignoring orders to retreat when her emotions are involved.

Berecca's role in the story is central. As the main character of the second story arc, she is sent by her master, Genryusai, on a secret mission to the city of Oedo. Officially, she is there to visit her father's grave, but her true objective is to investigate a WNA intelligence operative. This mission leads her to a shocking discovery: Leonard, a man believed to have died in the same accident that killed her father, is alive. Convinced that Leonard holds the key to the mystery, she pursues him, uncovering a dark conspiracy involving Shadow Ninja and mysterious, corrupting dark stones. Throughout the tournament and her mission, she forges key relationships with other characters. She is a student of the wise master Genryusai and works alongside the young ninja Kappei. Her investigation puts her in direct conflict with Leonard, a figure from her past who seems to both hinder and protect her.

Berecca undergoes notable development from her initial state as a frustrated researcher. The trauma of her transformation and the betrayal she feels upon learning that the Ninja-Gum was designed as a weapon, rather than a purely scientific achievement, shatter her expectations. This event, combined with the mystery of her father's death, fuels her transition from a dedicated scientist into an active, determined fighter. Over the course of her journey, she learns to harness her new powers, becomes more confident in her abilities as a ninja, and moves from simply wanting a cure to actively seeking the truth behind the WNA's secrets. In battle, her notable abilities include the use of Ninja-Gum to synthesize powerful weapons like the Drill Beast and the Sushi Axe, as well as using Gum Shoots for various combat effects. While she is a capable fighter, she is also shown to have notable weaknesses, including being known as a terrible cook and having a fear of horror-themed media.