

In Part 4 of _JoJo's Bizarre Adventure_ , we are introduced to Rohan Kishibe,
who has the ability Heaven's Door. Heaven's Door turns people into books that
detail their lives, which Rohan can read or write on to control those people.

  * We first see this with Koichi, who is directed to never attack Rohan when they first meet and who is made to forget what happened.

  * Later, when they are walking through an alley and Koichi turns back, despite warnings not to do so, Rohan saves him by using Heaven's Door to write that Koichi will be flung past the boundary of the alley.

  * In the side story _Thus spoke Rohan Kishibe_ , we also see Rohan use Heaven's Door on octopi to get them to save him and Tonio when the two are drowning.

What are the limits of this ability? I assumed that it was a question of what
is physically or logically possible, rather like the limitations of Death
Notes in _Death Note_.

However, I just saw the beginning of Part 5, where Koichi implies his fluency
in Italian is to Rohan's use of Heaven's Door. This seems less plausible as
something that could happen organically, when Koichi seems to have gone to
Italy on short notice and when language acquisition takes a lot of time. While
it could be interpreted as similar to memory manipulation, it's one thing for
Rohan to take away _existing_ memories, and another for him to add in
something that never existed.


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2019-06-07T17:47:35.337
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2023-08-28T15:02:25.283
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jojos-bizarre-adventure
What are the limits of Heaven's Door?


From what I know and have searched, Rohan himself is the only limit. Most
enemy Stand users also have a counter to Heaven's Door: since it needs to
touch what it affects, as long as they aren't touched, they're okay.


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2020-09-05T11:20:09.693
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2020-09-07T01:35:52.370
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According to the wikia he can,

  * Remove memories
  * Alter memories
  * Put commands into the person's mind
  * **Allowing the person to do things that shouldnt be physically possible, such as commanding Josuke to fly backwards at 70 km/h, _or allowing Koichi to speak Italian_**.
  * He can not read his own memory, but he may write commands on himself

[Heaven's door - Jojo Wikia](https://jojo.fandom.com/wiki/Heaven%27s_Door)


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2022-03-24T01:48:13.910
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