Jin Kobayashi

3.1.1. Serials

• School Rumble (スクールランブル_{Sukūru Ranburu}^Japanese) (2002-2008): Serialized in Weekly Shōnen Magazine and Magazine Special, compiled into 22 volumes.
• School Rumble Z (スクールランブルZ_{Sukūru Ranburu Zetto}^Japanese) (2008-2009): A sequel to School Rumble, serialized in Magazine Special, compiled into 1 volume.
• Natsu no Arashi! (夏のあらし！_{Natsu no Arashi!}^Japanese) (2006-2010): Serialized in Monthly Gangan Wing and later Monthly Gangan Joker, compiled into 8 volumes.
• Ichiro Heian! (一路平安！_{Ichiro Heian!}^Japanese) (2011-2012): Serialized in Bessatsu Shōnen Magazine, compiled into 2 volumes.
• Seiyū Mashimashi Club (声優ましまし倶楽部_{Seiyū Mashimashi Kurabu}^Japanese) (2014-2016): A 4-panel manga serialized in Shōnen Jump+, for which Kobayashi provided the illustrations based on an original story by Hibari Meguro. This work is a direct sequel to Hōkago Mashimashi Club.

3.1.2. Short stories and one-shots

• Kaettekita Hentai Kamen (帰ってきた変態仮面_{Kaettekita Hentai Kamen}^Japanese, lit. "Hentai Kamen Returns") (2008): Published in Jump SQ, based on the original work by Keishū Ando.
• Kabukicho Sono Koro (歌舞伎町そのころ_{Kabukichō Sono Koro}^Japanese) (2011): With an original story by Yuta, this work was included in the charity doujinshi pray for Japan, published to support relief efforts after the East Japan Earthquake.
• Bessatsu School Rumble WHAT'S UP DOC (2010): A one-shot published in Bessatsu Shōnen Magazine.
• School Rumble Diamonds on the Inside (2016): A one-shot published in Weekly Shōnen Magazine.
• School Rumble Give it away (2017): A one-shot published in Weekly Shōnen Magazine.
• School Rumble We Are the Champions (2017): A one-shot published in Magazine Pocket.

3.1.3. As original writer

• Koiuta (恋歌_Koiuta^Japanese, lit. "Love Song") (2007-2009): Published in Magazine Dragon, with illustrations by Yoshibe Tsuyama for the first chapter and Haru Emoto for the second. Kobayashi also created a promotional manga for it that appeared in Weekly Shōnen Magazine in 2008.
• Hōkago Mashimashi Club (放課後ましまし倶楽部_{Hōkago Mashimashi Kurabu}^Japanese, lit. "After School Mashimashi Club") (2013-2014): A 4-panel manga serialized in Jump LIVE. Kobayashi provided the illustrations, while the original story was by Hibari Meguro. All nine chapters of this work were later compiled into Seiyū Mashimashi Club Volume 3.

3.2.1. Anime and related works

Kobayashi has been actively involved in the anime adaptations of his own works and others. For Natsu no Arashi! Akinai-chū (2009), he contributed both the script and storyboards for episode 12.

He has also made several cameo appearances in the anime adaptation of School Rumble. He provided the voice for "Sailor F" in two episodes of the first season and served as the narrator for the prehistoric segment in the first OVA, School Rumble - First Term Extra. Additionally, he voiced "Teacher" and "Kobayashi-sensei" in School Rumble: Second Semester and a "Program Director" in a related drama CD. He also contributed original animation drawings for the final episode of the first season of School Rumble.

He has created end card illustrations for numerous anime series, including:

• Pani Poni Dash!, episode 21 (2005)
• Hidamari Sketch × 365, episode 11 (2008)
• ef - a tale of melodies., episode 8 (2009) (and preview illustration for episode 9)
• Maria Holic, episode 2 (2009)
• Bakemonogatari, episode 3 (2009)
• Dance in the Vampire Bund, episode 2 (2010)
• Hanamaru Kindergarten, episode 1 (2010)
• Arakawa Under the Bridge*2, episode 1 (2010)
• Puella Magi Madoka Magica, episode 4 (2011) (and preview illustration)
• UQ HOLDER!, episode 10

3.2.2. Visual novels and artbooks

Kobayashi has lent his artistic talents to visual novels and published artbooks. He served as an illustrator for Dai 24 TOKYO Ku (第24TOKYO区_{Dai Ni Jū Yon Tōkyō Ku}^Japanese, lit. "24th TOKYO Ward") in 2014. He also co-authored the artbook Kyōto, Haru. (京都、春。_{Kyōto, Haru.}^Japanese, lit. "Kyoto, Spring.") in 2009, a joint work with Takashi Takeuchi. Furthermore, he has contributed to TYPE-MOON projects, providing wallpapers for Fate/hollow ataraxia and an exclusive illustration with a message for the film pamphlet of Kara no Kyoukai, reflecting his ongoing creative exchanges with the brand.

3.2.3. Character design and other contributions

Beyond his primary manga and anime roles, Kobayashi has also worked on character design for other projects, such as Sunday × Magazine Cross Line. He also contributed card illustrations for the mobile role-playing game Chain Chronicle V, specifically for the characters "Massive Threat Canaan" and "Young Elder Yukachi".