Super Fly

Super Fly (スーパーフライ Supā Furai) is the Stand of Toyohiro Kanedaichi featured in Diamond is Unbreakable. It is bound to a transmission tower.

Super Fly is an automatic Stand that imprisons its user, Toyohiro, inside it, making it a nuisance. Its power of damage reflection means that it is powerful and invulnerable, but anyone is free to exploit the tower when fighting inside it.

Occupant Restraint Edit
Super Fly's defining ability is that it imprisons one occupant inside it.[2] It is mentioned that the energy of the sole prisoner is how it sustains itself.[3]

Toyohiro is the first prisoner of the tower and cannot leave until someone else steps in it. If that happens, the first of the two to exit the tower is free to leave while the other one must stay inside. Leaving the tower only requires not standing inside the structure, thus Toyohiro could hang on the side of Super Fly while Josuke was trapped.[2]