shirabe.org
1)
#26,517
ちゅうに
Meaning
    1. ①
      second year of junior high school; second-year junior high school student
      Only applies to 中2、中二
      abbr. of 中学校2年(生)
      I dropped out of school when I was in the 7th grade.
    2. ②
      behaving in a way characteristic of teenagers going through puberty, esp. by being overly self-conscious; 2nd year of junior high sickness
Forms
3)
ー
Meaning
    1. Unclassified
      long-vowel mark
      indicates that the preceding character is pronounced with a long vowel sound; used mainly in katakana writing

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