I can't find the anime I watched 2 years ago and I don't remember the name
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**ANIME DESCRIPTION:**
**Plot:**
- Two brothers practice sword fighting (katana) in front of their father
- One brother is deemed weaker and is exiled from the palace/castle
- The exiled brother returns wearing a ninja mask and dark/black clothing
- He uses ninja weapons: shuriken, bombs, etc., katana
- He returns to kill his father first, then his brother
- Fights against castle guards (solo)
- Falls from high places in the castle during fights
- One brother continues fighting despite severe injuries
- The brother who stayed at the palace had long hair
- Both brothers use swords/katanas
- One brother fights stealthily at first, then the fight becomes more spectacular
- Possible supernatural powers involved
- Setting: Japanese feudal castle
**Technical Details:**
- Released: After 2000
- Format: Movie OR short series (1 season, few episodes)
- Animation: 2D
- Language: Japanese audio with English subtitles
- Platform: idk but probably amazon prime
- Style: Not too dark/gory, but had some blood
- NOT: Dororo, NOT: Ninja Scrolls