Also known as
- English
- Humanity Has Declined Specials
- Romaji
- Jinrui wa Suitai Shimashita Specials
- Japanese
- 人類は衰退しました
- Synonyms
- Humanity Has Declined SpecialsHumanity Has Declined: Survival of the FittestHumanity Has Declined: The Humans' Law of the JungleJinrui wa Suitai Shimashita Ningen-san no, Jakuniku KyoushokuJinrui wa Suitai Shimashita Ningen-san no, Jakuniku Kyōshoku
