Wo De San Ti: Zhang Bei Hai Zhuan
Japanese title: 我的三体之章北海传
Alternative titles: My Three Body Chapter Beihai Biography
Type: ONA
Source: Novel
Episodes: 9
Status: Finished Airing
Aired: Jan 21, 2020 to Mar 10, 2020
Duration: 20 min per ep
Rating: PG-13 - Teens 13 or older
Genres: Sci-Fi

The story takes place in the span of the near future to two hundred years later. The civilization of earth was locked by the three bodies with a super technology called Tomoko, and basic research has stalled. However, humans still need to continue to advance to resist the upcoming attack of the three-body, guarding their homes and human civilization. On a broader scale, the three-body civilization and human civilization are both hunters in the dark forest. Carefully protecting themselves and destroying others, struggling for the survival of their civilizations.

(Source: Bilibili)