Potential plotline prompts legal question

[lilfluff]

Today in worldbuilding Fluff gets to ponder immigration law. Given this takes place in a country on a portal reached techofantasy world I could make up just about any answer. But, given

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[rix_scaedu]

If he entered as a dependent of the father and is still legally a minor, could the father be required to support him as the separation is not voluntary on the minor's part?