DVD only 13th episode of the series.
- Other Title: Tide-Line Blue: Kyoudai, Tide-Line Blue Special, Tide-Line Blue Episode 13, Tide-Line Blue: Brother, タイドライン・ブルー 兄弟, TLBlue, TLB, タイドライン・ブルー
- Status: Completed
- Sub/Dub: Anime Dub
- Anime Type: Special
- Genres: Adventure, Drama, Shounen, Action, Military, Action & Adventure, Animation
- Characters: Aoi, Gould, Teen, Keel
- Score: 6.58
- Rank: 6196
- Popularity: 10533