Rose Guns Days: Last Season is the fourth and final season in the Rose Guns Days series, and was first released on December 31, 2013. It consists of six chapters and covers the years 1949 and 1950.
- Main article: Rose Guns Days: Last Season/Plot Summary
Leo Shishigami returns to Japan in 1950 to find that Primavera has become a shadow of its former self. Teaming up with the young Jeanne Amakawa, Leo recruits allies both old and new to take down Primavera before it is too late.
- Leo Shishigami
- Rose Haibara
- Richard Maiougi
- Wayne Uedera
- Cyrus Saimura
- Meryl Tanashi
- Philip Butler
- Lee Meijiu
- Caleb Keireiji
- Miguel Kurashiki
- Claudia Kurosaki
- Alfred Akagi
- Julie Hayashibara
- Jeanne Amakawa
- Oliver Oribe
- Charles Chatani
- Nina Ninagi
- Alan Aramaki
- Keith Kisaragi
- Lee Meixue
- Sun Tzulung
- Gabriel Kaburaya
- Toratsugu Uedera
Original Release (Comiket 85)
Season 1 was first released for PC at C85 on December 31, 2013.
This arc was rereleased in The Best as a digital download on August 31, 2016.
- Last Season Volume 1 (JP release: August 22, 2015)
- Last Season Volume 2 (JP release: August 22, 2015)
- Main article: Rose Guns Days (stage play)
A stage play version was produced by Shingidan.
- Staff: Ryukishi07, dai, Nekozakura, Anzu, Kagami, Tsubasa, B Yuu, Yasaka, Tokihi
- Character Design: Akai Higasa, Jiro Suzuki, Soichiro, Takagi Tsuyoshi, Nana Natsunishi, Yaeko Ninagawa, Hinase Momoyama, Mizuki Sakurai, Kenichi Kondo, Takashi Yagi, Takafumi Ryusui
- Music and SFX: dai, M.Zakky, xaki (Pomexgranate.), Motoki Zakuro (Pomexgranate.), pre-holder, Luck Ganriki, FunczionSOUNDS, Rokugen Alice (Rokugen Asuke and Sakurai Anna), Gekijou Tenor (Tenor: Kazumi Shinjo; Guitar: TaNa, Toki; Bass: Ginga Tsubasa)
- Grand Ending: Conductor, "I miss you I need you" RGD Ver.
- Song: Gekijou Tenor
- Lyrics: Kazumi Shinjo
- Composition: TaNa
- Arrangement: Gekijou Tenor
- Logo Design (Tsubomi font): Yuichi Nakagawa
- Movie Design: yo-yu
- Coloring Chief: Asuta Ihara
- Coloring: Tou Hino
- Coloring Management: Ushio Endo
- Witch Hunt (chronotrig, crazysjd89, crystalweaver, Klashikari, Message, Roto, Squirrellord, Usagi Tenpura)
- Uncle Mion (Sonozaki Futago-tachi), Harumi, Hsiao Peng-yu, Stéphane LAPIE
- NScripter: Naoki Takahashi
- NScripter Extension Effects: Koubou Kimikagesou
- Special Thanks: You Omura, Makoto Fukami, Mei Renjōji, serori
- Square Enix: Hirotaka Ono, Hiroshi Koizumi, Noritaka Shimizu, Ayaka Furutani, Yoshitomo Takekasa, Ken Nakagawa, Ken Mochizuki, Genta Yokoyama, Saori Watanabe
- Kodansha: Tooru Miyajima, Hidenori Kojima
- Seikaisha: Katsushi Ota, Kunihiro Okamura
- HOBIBOX: Seto Atsushi, Hiroomi Takamiya
- Monthly FRONTIER Pioneering Anime and Manga Magazine, Zhang Chunmin (FANCY FRONTIER Pioneering Anime Festival), Café Dolce Vita, Yuu Tsubaki, Masako-san, Ryuko Niji, fitch, Chrys, Corsaire, Cray, DarkSoul, Emmanuel Bochew, Fl4vi3n, Kitsune, Klashikari, Luz, Mereck, Miyuu, N0n0sama, Niwakins, Phictre, Sedeto, Shikaze, Mitsunori Shimada, Tetho, Tin, Wyrine, Yokathaking, Epitanime (General Incorporated Association: Japanese International Association), & YOU!
- 07th Expansion