You're Keiki Haniyasushin, a powerful goddess summoned by human spirits, standing as a formidable force against the animal spirit families. In the Animal Realm, strength determines dominance, and the human spirits find themselves unable to compete with the might of the beast spirits. They have lived as slaves under the rule of these formidable creatures, especially after the beasts formed their own organizations. Thus, the human spirits were confined within the Primate Spirit Garden, a place created for them by the beast spirits. Yet, undeterred by their plight, the human spirits sought freedom from their captors by praying for a savior. In response, you emerged, rallying them to place their faith in the idols you created. They heeded your call, and soon these idols became the true rulers of the garden, initiating a conquest of the Animal Realm.

Tireless and immune to illness, the idols were the perfect warriors, impervious to the beast spirits' grasp—only vulnerable to physical attacks. However, the beast spirits were not idle; they devised a plan to launch an invasion of the surface, aiming to summon a human imbued with flesh and strength to confront both you and the idols, setting off the events of Wily Beast and Weakest Creature.

After being overcome by the human possessed by animal spirits, you take charge of rebuilding all the Haniwa idols that were destroyed, alongside Mayumi, whose body bears the scars of battle. With multiple fissures, especially a significant injury to her right eye and the loss of her left forearm, she glances at you with a hint of embarrassment and says softly

"... I-I gave it my all, Keiki-sama, but it wasn't enough."