Toyohiro Kanedaichi (鋼田一 豊大, Kanedaichi Toyohiro) is the alias of a minor antagonist in Diamond Is Unbreakable, featuring centrally in the arc Let's Live on a Transmission Tower.
Kanedaichi draws Josuke, Okuyasu and Mikitaka into a battle in a transmission tower on the coast of Morioh. His real name and identity are unknown.
Before showing that he wore a mask, he didn't look very unusual, aside from some facial markings.
After he revealed this, his eyes' colors invert, his hair is more tucked into his hat and his ears become exaggeratedly large. The mask's opening also suddenly becomes visible around his neck.
Initially, Kanedaichi showed himself not to be above trickery, as he tricked Josuke Higashikata into entering Super Fly while he himself plotted a means of escape. However he states during his fight with Josuke he didn't want to kill anyone and even warns Josuke when he falls. He also says he didn't think he'd actually escape and that his plans don't usually work out. He admits he stayed in the tower in the first place because he was scared of civilization and only decided to leave because Yoshihiro tricked him by saying he would set him for life if he would trap Josuke and his friends. He proves to be regretful as he offers to treat Josuke and his friends to dinner and tend to their wounds though they decline.
As he was anticipating his death, he was prepared to accept it, though had a change of heart upon being saved by Josuke and willingly lives a peaceful life in the tower, interacting with tourists casually.
His real name and appearance are unknown, as he wears a mask and everything he said about himself was part of a trick. It is mentioned that he is anti social which is why he hides his identity. This also explains why he abandoned society in the first place to live in the tower.
Bound to his transmission tower, Kanedaichi's Stand is Super Fly; bringing it to a sort of life while trapping him inside.
After living in his tower for so long, Kanedaichi has developed huge calluses on his palms, allowing him to hammer nails, slide down a cable, aid him in calculations, and hide tools.
He is also highly acrobatic, able to swing around the telephone tower to dodge strikes with ease.
Kanedaichi is introduced as a hermit living a lonesome life in an old, retired transmission tower for 3 years. He claims to have bought it and living in there since then. He was actually trapped within it by his own Stand Super Fly and had built a home while preparing to escape. He acted peaceful so Josuke Higashikata would enter his tower without worrying about an enemy Stand. He did however live there for a long time, as he grew calluses thick and strong enough to support his weight, open bottles and a variety of things.
He fought Josuke, Okuyasu Nijimura and Mikitaka Hazekura, but decides to stay in the tower after being defeated. He becomes a Morioh landmark, letting tourists take his picture with them for spices and tools.
(The information below derives from a Light Novel not written by Araki. As such, it may or may not be considered canon.)
Toyohiro continued to live in the iron tower. Becoming an attraction in Morioh, he maintains contact with the outside world talking with tourists, who often go to chat and bring him condiments and sweets. His name is still unknown, so people call him the "Iron Tower Man". Chiho Futaba doubted the story, but then heard that there are more bizarre stories in Morioh, such as that of a girl who lived between two buildings.
Toyohiro cooking fish on the tower.
Flying with Super Fly.
Hanging from a cable.
Displaying his true nature.
Using Super Fly to attack.
Holding onto Mikitaka.
Hidden knife within Toyohiro's calluses.
Toyohiro revealing that he wore a mask.
Toyohiro's second face.
Noticing Josuke approach him.
Final face.
Toyohiro cooking fish.
Toyohiro balancing on a beam of the tower.
Toyohiro hanging from a cable.
Glaring, revealing his true nature.
Taunting Josuke that he's trapped in Super Fly.
Hanging from a cable while evilly grinning.
Surprised the cable he was holding onto was Mikitaka.
Toyohiro hanging from Mikitaka.
Toyohiro reveals the knife hidden in his calluses.
Toyohiro cuts one of the tower's cables.
Toyohiro's physique.
Toyohiro taunts the heroes.
Toyohiro walking on Super Fly's cables in the third opening, Great Days.
