2 Spelling of an important term
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Introducing your story like this is no problem, however if C is normally unrelated to the story you may consider the first chapter not being a de facto chapter and call it an introduction/Prelugeprologue instead. It is a common characteristic of an introduction to introduce the plot via a side character. Normally this is a very short chapter comprising of one short scene. If your chapter falls into this description you may want to consider making it an Introduction/Prelugeprologue.

Introducing your story like this is no problem, however if C is normally unrelated to the story you may consider the first chapter not being a de facto chapter and call it an introduction/Preluge instead. It is a common characteristic of an introduction to introduce the plot via a side character. Normally this is a very short chapter comprising of one short scene. If your chapter falls into this description you may want to consider making it an Introduction/Preluge.

Introducing your story like this is no problem, however if C is normally unrelated to the story you may consider the first chapter not being a de facto chapter and call it an introduction/prologue instead. It is a common characteristic of an introduction to introduce the plot via a side character. Normally this is a very short chapter comprising of one short scene. If your chapter falls into this description you may want to consider making it an Introduction/prologue.

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Introducing your story like this is no problem, however if C is normally unrelated to the story you may consider the first chapter not being a de facto chapter and call it an introduction/Preluge instead. It is a common characteristic of an introduction to introduce the plot via a side character. Normally this is a very short chapter comprising of one short scene. If your chapter falls into this description you may want to consider making it an Introduction/Preluge.