What does _marumaru_ mean?

For example, this anime title ひとりぼっちの○○生活 (Hitori Bocchi no Marumaru
Seikatsu). What does _marumaru_ mean here?
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2019-05-21T16:59:50.853
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2019-10-27T23:22:42.957
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hiragana
I want to know what "marumaru" means
まる is a name of this circle symbol, and `○○` is read out loud as まるまる, なになに,
etc. It is used to make a placeholder or to mask a part of a sentence/word.
English equivalent is `**`, `__`, "blank", "blah" or "bleep". In this case, I
think the author used it just to make the title look more interesting.

Related:

  * [How do you pronounce "☓☓" as a placeholder?](https://japanese.stackexchange.com/q/12907/5010)
  * [Why censor this one kanji?](https://japanese.stackexchange.com/q/11810/5010)
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2019-05-21T21:41:17.130
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○ or × are often used as replacement characters for something that should be
somewhat obvious to the reader but is not actually spelled out for some
reason. One common example is using real life names of people or brands in
fiction, e.g. マクドナルド→ マクド○ルド. The reasons could include trying to avoid notice
of the person/company in question for possibly infringing use of their name or
others.

However, in your example it seems to me rather a filler for a word (which are
often two characters in Japanese), so possibly you are supposed to fill it in
using your imagination.
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2019-05-21T21:57:34.260
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2019-05-21T21:57:34.260
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I think Igor is correct; I'd add the idea that it might be a spot for you to
insert your own name. Perhaps it's an easter egg left by the author so you can
insert yourself into the title. After all, 'Hitoribocchi no (name) seikatsu"
would roughly translate to something like "All Alone, (name)'s Life" or maybe
"The Lonesome Life of (name)."
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