Takumi Fujiwara is a skilled street racer, but he suffers a crushing loss against the team Emperor's leader Kyoichi Sudou due to his AE86 experiencing an engine failure. Doubting his abilities, the recent high school graduate is then approached by the Akagi RedSuns' team leader Ryousuke Takahashi, who proposes the formation of a professional street racing team. Although it would be the ideal way to improve as a street racer, Takumi remains undecided. Does the young street racer have what it takes to become a professional? Perhaps Ryousuke and the RedSuns can help him reevaluate his own doubts and misconceptions concerning street racing. However, first and foremost, Takumi decides to settle the score with Kyoichi Sudou... [Written by MAL Rewrite]

Takumi Fujiwara finally joins Ryousuke and Keisuke Takahashi to create "Project D." Their goal is twofold: Ryousuke wants to develop his "High-Speed Street Racing Theory," while Keisuke and Takumi aim at improving their driving skills by facing powerful opponents on dangerous roads. The idea of Project D is to challenge street racing teams from other prefectures to improve both their uphill and downhill records. In order to attract the attention of the best racing teams, Ryousuke creates a dedicated website to announce the future battles of Project D and post the team's results. The fourth season of Initial D details the hardships and successes of the members of Project D as they try to become the best street racing team outside of Gunma Prefecture. [Written by MAL Rewrite]

Taking place in the sacred land of street running Kanagawa, once more Takumi Fujiwara will show his driving skills in his now legendary Hachi-roku.

Video games, especially puzzle games, were always at the center of Konomi Kasahara's life. However, upon entering Hanamiya High School, she decides to break away from this lifestyle. As Konomi wanders the halls in search of a new activity to engage herself in, she stumbles upon a gigantic wall owned by the school's rock climbing team. Fascinated, she attempts to scale the wall, discovering that she can use her puzzle-solving skills to help her reach the top. Certain that she has found her calling, Konomi immediately joins the club. As she strives to improve her climbing skills, Konomi, alongside the rest of the Hanamiya Climbing Team, will learn what it truly means to be a "sports climber" and work to achieve victory in the upcoming competitions. [Written by MAL Rewrite]