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subscriber; reader; admirer
この雑誌の愛読者は年々増えている。
The readers of this magazine are increasing every year.
愛読者からの手紙が作家の励みになった。
Letters from devoted readers became encouragement for the author.
彼は小学生の頃からその作家の愛読者だ。
He has been a devoted reader of that author since elementary school.