Manga
Written and illustrated by Takuma Morishige, the manga began as a one-shot published in the August 2010 issue of Media Factory's Comic Flapper magazine, and later started serialization in the magazine's November 2010 issue. The first tankōbon volume was published on April 23, 2011[8] and the tenth was released in March 2017.[9] Vertical licensed the manga for North American publication[1] under the title My Neighbor Seki, and has been releasing volumes since January 2015.
A spin-off series titled My Neighbor Seki-kun Junior launched in the July 4, 2020, issue of Monthly Comic Flapper.[10] The spin-off ended in the May 2, 2023, issue of Monthly Comic Flapper.[11] The spin-off's chapters were collected into three tankōbon volumes from June 23, 2021, to June 22, 2023.[12][13]
Volumes
More information No., Original release date ...
| No. |
Original release date |
Original ISBN |
English release date |
English ISBN |
| 1 | April 23, 2011[8] | 978-4-8401-3791-1 | January 13, 2015[14] | 978-1-9391-3096-9 |
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| Rumi is concerned that Seki's domino show may cause a big explosion. Seki role-plays a soap opera plot with Shogi pieces. He polishes his desk, makes a column out of sand, makes figures out of go pieces, plays with cats, hosts a post office for passing class messages, and makes a huge rook out of chess pieces. Rumi looks inside Seki's desk but cannot fit the pieces back. Outside, Seki makes figures out of the chalk used to mark the lines on a field. He does origami and plays kokkuri-san, a Ouija board-like game. Seki later knits a cactus before pulling out toy robots and has them go through disaster preparedness drills. As the class falls asleep to a music, Seki works on a jigsaw puzzle. |
| 2 | November 22, 2011[15] | 978-4-8401-4065-2 | April 14, 2015[16] | 978-1-9391-3097-6 |
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| Seki plays Fukuwarai and shows Rumi a card trick. During lunch, he does a roleplay with octopus sausages and another shogi soap opera. The day that Maeda, the guy in front of Seki, is absent, he plays games under his desk by using his feet. The class goes on a hike but encounters Seki's old messages about a demon and a castle. When Seki plays miniature-sized golf, Gotō watches Rumi's interactions and assumes Rumi and Seki are lovers. Seki does a roleplay with Othello pieces, plays Jenga, and rolls a cube and makes stories. In swimming class, he lets his robots do a water safety roleplay. As Seki hides in a pile of leaves outside, he has a group of miniature bears scale Maeda's back. |
| 3 | July 23, 2012[17] | 978-4-8401-4701-9 | July 14, 2015[18] | 978-1-9412-2048-1 |
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| Seki excavates his desk for fossils and constructs a dinosaur. He tries out a variety of glasses, pits chess pieces against shogi pieces, and tries out palm reading. When Rumi is absent, Gotō suspects Seki misses her when he role-plays with some paper dolls. He makes a flip book and annotates it with voiceover. Outside in the snow, Seki fashions a bunny but threatens to have it sink in the ice water, but Rumi saves it. He shows a stamp seal out of an eraser, but Uzawa interferes. Seki makes a driving course with an RC car. He simulates a baseball match with magnets. Outside of class, Rumi catches Seki fabricating pictures of UFOs, and meets Seki's sister. Rumi's teacher is worried about Rumi's behavior and prepares a surprise bag inspection, but Seki uses that time to role-play with his robots. Seki has a tea ceremony as he pans for gold. |
| 4 | April 6, 2013[19] | 978-4-8401-5046-0 | September 22, 2015[20] | 978-1-9412-2049-8 |
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| Seki shows a logo and tries to brand everything in sight. He pits a rhinoceros beetle against other beetles. He plays a crane game. When Rumi, Seki, and Gotō draw each other, Gotō tries to capture Rumi's feelings while Seki plays a marble maze game. During the sports day tamaire (ball toss game), Rumi is worried about a beehive underneath the basket. Seki does some sports day events where he paints his nails (and later his hands and feet) to emulate hard conditions. Seki pits Karuta cards against Hanafuda cards in a card-fighting game. Seki decorates a Christmas tree. During a self-study period, Seki naps on a pillow but it has a picture underneath it. On kite flying day, Yokoi spots Seki's robot family doing the activity. |
| 5 | January 4, 2014[21] | 978-4-0406-6240-4 | November 24, 2015[22] | 978-1-9412-2089-4 |
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| Seki makes dango out of mud. He plays with Shogi pieces, but Uzawa interferes. He plays with a Magic Hand. He customizes a pair of jeans. Both Rumi and Seki's mother visit a lesson in class and Rumi meets Seki's mother. Seki takes care of potted plants. He uses his desk to sell various curiosities. He builds a model railroad inside his desk. He makes several clay figures. The class goes on a trip and Gotō fantasizes again about Rumi's and Seki's "relation". Seki plays with a mini pool table. He tries to fix a stubborn piece of his hair. |
| 6 | July 23, 2014[23] | 978-4-0406-6819-2 | January 19, 2016[24] | 978-1-9429-9309-4 |
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| 7 | April 23, 2015[25] | 978-4-0406-7515-2 | March 15, 2016[26] | 978-1-9429-9310-0 |
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| 8 | December 22, 2015[27] | 978-4-0406-7865-8 | October 4, 2016[28] | 978-1-9429-9350-6 |
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| 9 | August 23, 2016[29] | 978-4-0406-8510-6 | May 9, 2017[30] | 978-1-9450-5401-3 |
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| 10 | March 23, 2017[9] | 978-4-0406-9019-3 | January 23, 2018[31] | 978-1-9450-5450-1 |
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My Neighbor Seki Junior
More information No., Original release date ...
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Anime
A 21-episode anime directed by Yūji Mutoh and produced by Shin-Ei Animation, aired in Japan between January 5 and May 25, 2014, and was simulcast by Crunchyroll under the title Tonari no Seki-kun: The Master of Killing Time. The fifth manga volume was released simultaneously on January 4, 2014, with a limited edition, bundled with an original animation DVD containing two additional episodes.[33][34] The series was released on DVD in two parts on May 28, 2014, with a bonus episode on each disc.[35][36][37] The opening theme is "Meiwaku Spectacle" (迷惑スペクタクル, Meiwaku Supekutakuru; lit. 'Nuisance Spectacle') by Kana Hanazawa, and the ending theme is "Set Them Free" by Akira Jimbo.[33][38] The music in the series is composed by Akifumi Tada. The drama CD for the anime was released on January 22, 2014, by King Records.[39]
Live-action
The series was adapted into a live-action show where it was paired with another live-action adaptation titled Rumi's Phenomenon. Both programs involve a main character named Rumi. It premiered on MBS and TBS on July 27, 2015[40] as Tonari no Seki-kun to Rumi-chan no Jishō (となりの関くんとるみちゃんの事象; My Neighbor Seki and Rumi's Phenomenon) and ran for eight episodes.[41] Morishige said "I feel a sense of odd destiny that the heroines' names are coincidentally the same."[7][42]
