Perhaps Kaido had simply been too young at the time, and perhaps he had looked rather cute as well. Even Ryuma, decisive and ruthless as he was, had ultimately been unable to kill him. But that mercy condemned Kaido to a nightmare-like childhood.
Ryuma dusted himself off and left, while Kaido, not yet three years old, had lost his parents' protection far too early. At such a tender age, he could only face the incomparably ferocious beasts of Onigashima himself, narrowly escaping death time and again.
Yet, relying on the Evil Spirits' innate vitality, Kaido ultimately survived. After repeated successful hunts and escapes, he grew stronger and stronger. By the age of twelve or thirteen, there was no longer any creature on the once-extremely-dangerous Onigashima that could threaten him.
However, traumatized by the shadow Ryuma had left behind all those years ago, Kaido did not dare invade neighboring Wano Country as his ancestors had. Instead, he did the opposite, taking a raft out to sea and away from Wano Country.
It was not until twenty years later, after seeing a far broader world and growing into someone with few equals in this world, that Kaido returned to Onigashima for the first time. There, he made contact with Kurozumi Orochi, who likewise bore a deep hatred, and sought revenge against Wano Country.
"His childhood really was miserable," Mousse said, though his expression made it clear that he felt little sympathy. After all, the Evil Spirits produced nothing and lived solely by plunder. Even if they had been exterminated, they had deserved it.
Still, Mousse could understand Kaido's atrocities, even his failed upbringing of his daughter:
"Since he had been left all alone at such a young age, Kaido was not deeply influenced by his tribe's vile traditions. He could have taken