Initial D 4th Stage
Episodes
Initial D 4th Stage - Episode 21
Takumi Fujiwara and brothers Keisuke and Ryousuke Takahashi have formed "Project D," a racing team aimed at bringing their driving skills to their full potential outside their prefecture. Using the internet, Project D issues challenges to other racing teams and posts results of their races. Managed by Ryousuke, the team has Takumi engaging in downhill battles with his AE86, while Keisuke challenges opponents uphill. Among their rivals are the Seven-Star Leaf (SSR) and Todo-juku.
Episode 21 Viewing Guide & Storyline Overview
Canon EpisodeYou are streaming Initial D 4th Stage Episode 21 in full 1080p Ultra High Definition with English Subtitles and English Dubbed audio options. Episode 21 delivers critical plot developments, high-caliber fight sequences, and character evolutions crafted by top Japanese animation animators.
Powered by 9-anime.si's edge streaming nodes, this episode offers instant zero-buffering playback, adaptive resolution switching (1080p, 720p, 480p), and synchronized dual-audio channels. AniSkip smart timestamp integration automatically detects and bypasses the opening theme (OP) and ending credits (ED) so you experience uninterrupted narrative flow.
Technical Stream & Anime Specifications
Verified Metadata- Japanese Title
- 頭文字[イニシャル]D FOURTH STAGE
- Animation Studio
- A.C.G.T.
- Audio Codec
- Dual Audio AAC 192k (Sub/Dub)
- Video Resolution
- 1080p Ultra HD (60 FPS)
- Episode Duration
- 27 min / ep
- Broadcast Format
- TV • FINISHED
- Community Score
- 8 / 10
- Failover CDN
- Active Multi-Server CDN
Key Characters & Voice Cast (Seiyuu)
Official Voice Actors
Takumi Fujiwara
Ryousuke Takahashi
Keisuke Takahashi
Bunta Fujiwara
Kyouichi Sudou
Itsuki Takeuchi
Kyouko Iwase
Kouichirou Iketani
Episode 21 Frequently Asked Questions
Direct AnswersHow do I switch between English Sub and English Dub for Episode 21?
Use the server selector pills directly above the video player to switch between Subbed and Dubbed streams. Both options feature 1080p crystal-clear playback with crisp audio synchronization.
How does the automatic intro/outro skip feature work?
9-anime.si integrates AniSkip crowdsourced timestamp verification to detect the precise start and end markers of anime opening and ending themes, automatically skipping them without cutting canonical content.
When will the next episode release?
All episodes of this season are available for binge streaming in 1080p on 9-anime.si.