National Irresponsible Era (全国無責任時代 Zenkoku Musekinin Jidai) is the second opening song of the anime Keroro Gunso sung by GAGAGA SP from episode 52 to 78.
Information
- Artist: GAGAGA SP
- Label: Sony Music Records
- Lyricist, Composer: Kozack Maeda
- Arrangement: GAGAGA SP
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