Iwasuke

Iwasuke is a tiny dog of no clear breed, closest in look to a chihuahua. His ears come to points and his slender tail finishes in a dense tuft of fur. Most of his coat is pale, but a strip of darker, spiky fur runs from the top of his head down his back, giving him something like a horse's mane.

Gentle by nature, Iwasuke bonds quickly with Tsurugi. Before settling into the Higashikata home, he mostly roamed the ground near the Wall Eyes, the nearby springs, and the site of the family house.

As a Rock Animal, Iwasuke can shift at will between an ordinary dog and a hardened, stone-like state, a skin tough enough to endure Ozon Baby's crushing pressure, and he can also pass straight through solid walls. Around the time of the Morioh earthquake, he ate a Locacaca fruit that Josefumi Kujo had left behind, savored the taste, and trotted off. Yasuho first spots him near the Wall Eyes, the very place she once met Josuke, and later notices him prowling the Higashikata property.

Tsurugi recounts finding Iwasuke near the Wall Eyes looking crumpled and stony, seemingly dead, until Yotsuyu Yagiyama revived him with a Locacaca fruit. Curious about the cure, Norisuke and Tsurugi bait a trap with dog food, but Iwasuke ignores it and instead phases through a wall into the underground storeroom to snatch the Locacaca and munch on Josuke's sesame honey dumplings. Rather than flee, he wags his tail while being petted, and Tsurugi, pitying a dog likely left homeless by the quake, decides to keep and name him. Iwasuke later joins the family portrait and, when Ozon Baby assaults the garage, is badly hurt but drags himself into his doghouse, turning to stone to weather the pressure and emerging shaken yet alive.