Keiko Himuro, Chairman of the Kisuragi School, puts together an all-girl baseball team led by Ryo Hayakawa, daughter of a legendary pitcher, in hopes of proving that girls can compete just as well as boys. Their goal: Koshien stadium, where only the best teams get the opportunity to play.
You can now watch Princess Nine online on the following streaming providers in the United States.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Hayakawa Ryou, Age 15 | 1998-04-08 | 25 min |
| Season 1 | Episode 2 | A Baseball Team at a Prestigious Girl's School? | 1998-04-15 | 25 min |
| Season 1 | Episode 3 | In My Father's Footsteps | 1998-04-22 | 25 min |
| Season 1 | Episode 4 | Welcome Seira! | 1998-04-29 | 25 min |
| Season 1 | Episode 5 | Wave Motion Swing! | 1998-05-06 | 25 min |
| Season 1 | Episode 6 | Catch This! | 1998-05-13 | 25 min |
| Season 1 | Episode 7 | We Need You Izumi | 1998-05-27 | 25 min |
| Season 1 | Episode 8 | The Future on the Line | 1998-06-03 | 25 min |
| Season 1 | Episode 9 | Winners & Losers | 1998-06-10 | 25 min |
| Season 1 | Episode 10 | The Kisaragi Nine | 1998-06-17 | 25 min |
| Season 1 | Episode 11 | Aim for Koshien! | 1998-06-24 | 25 min |
| Season 1 | Episode 12 | One Hundred Pitches | 1998-07-01 | 25 min |
| Season 1 | Episode 13 | The Girl Stratagem | 1998-07-08 | 25 min |
| Season 1 | Episode 14 | Lightning Ball | 1998-07-15 | 25 min |
| Season 1 | Episode 15 | Scandal | 1998-07-22 | 25 min |
| Season 1 | Episode 16 | Exile | 1998-07-29 | 25 min |
| Season 1 | Episode 17 | Visions | 1998-08-05 | 25 min |
| Season 1 | Episode 18 | The Gift | 1998-08-12 | 25 min |
| Season 1 | Episode 19 | Hearts & Diamonds | 1998-08-19 | 25 min |
| Season 1 | Episode 20 | Back in Training | 1998-08-26 | 25 min |
| Season 1 | Episode 21 | I Hate You, Takasugi | 1998-09-02 | 25 min |
| Season 1 | Episode 22 | You're Not Alone, Yuki | 1998-09-09 | 25 min |
| Season 1 | Episode 23 | Beauties vs. the Beasts | 1998-09-16 | 25 min |
| Season 1 | Episode 24 | The Kiss | 1998-09-30 | 25 min |
| Season 1 | Episode 25 | Field of Broken Dreams | 1998-10-07 | 25 min |
| Season 1 | Episode 26 | Shine, Princess Nine! | 1998-10-14 | 25 min |
| Sound | Mami Kingetsu | Theme Song Performance |
| Sound | Masamichi Amano | Music Arranger |
| Art | Hiroshi Kato | Art Direction |
| Sound | Franz Schubert | Music |
| Visual Effects | Yoshimi Hashimoto | Character Designer |
| Visual Effects | Akihiko Yamashita | Character Designer |
| Writing | Kensei Date | Original Concept |
| Sound | Miki Nagasawa | Theme Song Performance |
| Crew | Kou Yamamoto | Special Effects |
| Production | Yasuhito Yamaki | Executive Producer |
| Production | Mamoru Hatakeyama | Producer |
| Directing | Tomomi Mochizuki | Series Director |
