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老成 ろうせいらなければいけない
rōseira nakereba ikenai

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Ichidan Verb
, 
i-Adjective

Alternative obligation form of 老成る

1. Must mature.; Have to become mature.; Need to grow up.

Obligation

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老成らなければいけない

老成らなければいけない【ろうせいらなければいけない】 Activity

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