Longest light novel series (by volume count) with volumes out in the past year

As my thoughts were wandering randomly through various things earlier, I started wondering what the longest ongoing light novel series were. I started by trying to think if I could work it out, but the idea fell apart rather quickly as it often isn’t obvious whether or not a series has finished. Indeed, for some series it would probably mean tracking down the author in person to ask them. In other words, out of the question.

So I considered what I could do instead, and quickly decided on doing a list of the longest series to have seen volumes out in the past year. After all, I had all the data right here on this blog, and it is for the most part from this blog that I gathered the data.

It’s worth pointing out that this is covering everything with releases in the past year. As such there are series on this list that finished months ago, and there are ongoing series which would be long enough to be on this list but aren’t on account of having not had a new volume out in the past year.

Side stories and gaiden volumes are not included. Nor is any content that is not available as a conventional part of the series (eg. anime bonuses). For the sake of simplicity, half volumes and volume zeros are also excluded. They’re usually like gaiden volumes anyway. Sequel volumes, however, are included, so long as they are part of the main series.

Sequel and spinoff series are counted as separate to the earlier volumes. Hayou no Tsurugi and the Monogatari Series are both slightly special cases in that they are several sub-series within a single continuous series. In the case of Hayou no Tsurugi I included only the current subseries, whereas for the Monogatari series I included the whole thing. This, incidentally, is the opposite of MAL’s treatment so you can consider it as recompense for that if you’d like. If you want to include all of Hayou no Tsurugi then it’s 40 volumes plus 8 gaiden scattered across the series. If you want to include only the current sub-series of Monogatari then you can remove it from the list entirely.

Series with rereleases but no new volumes in the time covered are not included. Ditto series with only gaiden releases in the past year.

The cutoff for inclusion is 10 volumes, and everything included in my weekly light novel releases posts are included here. If a series is on here which you think shouldn’t be, blame Amazon.

Format:
Title (label) – volume count

Shounen Onmyouji (Kadokawa Beans Bunko) – 42 volumes, although the official volume count is 50 as it includes gaiden volumes
Ryuu & Dr. Series (Kodansha X Bunko White Heart) – 31 volumes
Hayou no Tsurugi (Cobalt Bunko) – 30 volumes in current sub-series
Rokujouma no Shinryakusha!? (HJ Bunko) – 25 volumes
Hidan no Aria (MF Bunko J) – 24 volumes
GENESIS SERIES: Kyoukaisenjou no Horizon (Dengeki Bunko) – 23 volumes
Baccano! (Dengeki Bunko) – 22 volumes
Highschool DxD (Fujimi Fantasia Bunko) – 22 volumes
Monogatari Series (Kodansha BOX) – 22 volumes in total
Zero no Tsukaima (MF Bunko J) – 22 volumes
Accel World (Dengeki Bunko) – 21 volumes
Mahouka Koukou no Rettousei (Dengeki Bunko) – 21 volumes
Campione! (Superdash Bunko/Dash X Bunko) – 20 volumes
Kino no Tabi (Dengeki Bunko) – 20 volumes
Sanzensekai no Karasu wo Koroshi (Wings Bunko) – 20 volumes
Saredo Tsumibito wa Ryuu to Odoru (Gagaga Bunko) – 19 volumes
Seiken Tsukai no World Break (GA Bunko) – 19 volumes
Sword Art Online (Dengeki Bunko) – 19 volumes
Ookami to Koushinryou (Dengeki Bunko) – 18 volues
Madoushi wa Heibon wo Nozomu (Arian Rose) – 17 volumes
Oda Nobuna no Yabou (GA Bunko/Fujimi Fantasia Bunko) – 17 volumes
Shinyaku Toaru Majutsu no Index (Dengeki Bunko) – 17 volumes
Hataraku Maou-sama (Dengeki Bunko) – 16 volumes
Kanojo ga Flag wo Oraretara (Kodansha Ranobe Bunko) – 16 volumes
Madan no Ou to Vanadis (MF Bunko J) – 16 volumes
Okobore Hime to Entaku no Kishi (B’s Log Bunko) – 16 volumes
Ore ga Heroine wo Tasukesugite Sekai ga Little Apocalypse (HJ Bunko) – 16 volumes
Outbreak Company (Kodansha Ranobe Bunko) – 16 volumes
Seirei Tsukai no Blade Dance (MF Bunko J) – 16 volumes
Strike the Blood (Dengeki Bunko) – 16 volumes
Tate no Yuusha no Nariagari (MF Books) – 16 volumes
Uchi no Isourou ga Sekai wo Shouaku Shiteiru! (GA Bunko) – 16 volumes
Date A Live (Fujimi Fantasia Bunko) – 15 volumes
Nareru! SE (Dengeki Bunko) – 15 volumes
Omae wo Otaku ni Shiteyaru Kara, Ore wo Riajuu ni Shitekure! (Fujimi Fantasia Bunko) – 15 volumes
Oushuu Youi-tan (Kodansha X Bunko White Heart) – 15 volumes
Nidome no Jinsei wo Isekai de (HJ Novels) – 14 volumes
Shin Tenchi Muyou! Ryououki Gaiden Tenchi Muyou! GXP (Fujimi Fantasia Bunko) – 14 volumes
(Kari) Hanayome no Yangotonaki Jijou (B’s Log Bunko) – 13 volumes
Fairytale Chronicle (MF Books) – 13 volumes
Juuou Mujin no Fafnir (Kodansha Ranobe Bunko) – 13 volumes
Magika no Kenshi to Basileus (MF Bunko J) – 13 volumes
Mushoku Tensei ~Isekai Ittara Honki Dasu~ (MF Books) – 13 volumes
Netoge no Yome wa Onna no Ko Janai to Omotta? (Dengeki Bunko) – 13 volumes
Nourin (GA Bunko) – 13 volumes
Rail Wars! (Sohgeisha Clear Bunko) – 13 volumes
Taimadou Gakuen 35 Shiken Shoutai (Fujimi Fantasia Bunko) – 13 volumes
Hashire, Ute! (MF Bunko J) – 12 volumes)
Heavy Object (Dengeki Bunko) – 12 volumes
Hoshikuzu Eiyuuden (Ponycan BOOKS Light Novel Series) – 12 volumes
Hundred (GA Bunko) – 12 volumes
Hyakuren no Haou to Seiyaku no Valkyria (HJ Bunko) – 12 volumes
Inou Battle wa Nichijou-kei no Naka de (GA Bunko) – 12 volumes
Kimaira (Asahi Novels) – 12 volumes
Ore no Kanojo to Osananajimi ga Shuraba Sugiru (GA Bunko) – 12 volumes
Ore, Twintail ni Narimasu (Gagaga Bunko) – 12 volumes
R.O.D (Superdash Bunko) – 12 volumes
Ryuugajou Nanana no Maizoukin (Famitsu Bunko) – 12 volumes
Absolute Duo (MF Bunko J) – 11 volumes
Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka (GA Bunko) – 11 volumes
Gakusen Toshi Asterisk (MF Bunko J) – 11 volumes
Haken no Kouki Altina (Famitsu Bunko) – 11 volumes
Hentai Ouji to Warawanai Neko (MF Bunko J) – 11 volumes
Kuusen Madoushi Kouhosei no Kyoukan (Fujimi Fantasia Bunko) – 11 volumes
Mahou Shoujo Ikusei Keikaku (Kono Light Novel ga Sugoi! Bunko) – 11 volumes
Maou na Ano Ko to Murabito A (Dengeki Bunko) – 11 volumes
Nejimaki Seirei Senki: Tenkyou no Alderamin (Dengeki Bunko) – 11 volumes
Only Sense Online (Fujimi Fantasia Bunko) – 11 volumes
Ore ga Ojousama Gakkou ni “Shomin Sample” Toshite Rachirareta Ken (Ichijinsha Bunko) – 11 volumes
Overlord (ENTERBRAIN) – 11 volumes
Rakudai Kishi no Cavalry (GA Bunko) – 11 volumes
Re:Zero kara Hajimeru Isekai Seikatsu (MF Bunko J) – 11 volumes
Saenai Heroine no Sodatekata (Fujimi Fantasia Bunko) – 11 volumes
Saijaku Muhai no Bahamut (GA Bunko) – 11 volumes
Boku to Kanojo no Game Sensou (Dengeki Bunko) – 10 volumes
Bu ni Mi wo Sasagete Hyaku to Yonen. Elf de Yarinaosu Musha Shugyou (Fujimi Fantasia Bunko) – 10 volumes
Hachi-nan tte, Sore wa Nai deshou! (MF Books) – 10 volumes
Kono Subarashii Sekai ni Shukufuku wo! (Kadokawa Sneaker Bunko) – 10 volumes
Kou-1 desu ga Isekai de Joushu Hajimemashita (HJ Bunko) – 10 volumes
Magicraft Meister (MF Books) – 10 volumes
Masou Gakuen HxH (Kadokawa Sneaker Bunko) – 10 volumes
Next Life (Hero Bunko) – 10 volumes
Ochitekita Naga to Horobiyuku Majo no Kuni (MF Bunko J) – 10 volumes
Reinousha Minato (Media Works Bunko) – 10 volumes
Sengoku Bocchi (Sakura no Mori Bunko) – 10 volumes
Shinmai Maou no Testament (Kadokawa Sneaker Bunko) – 10 volumes
Wakeari Seitokai! NEXT (Mahou no i-Rand Bunko) – 10 volumes

P.S. If you know that any of this is inaccurate as of the time of this post, or any series that are missing, please let me know. There were a couple of series for which I found that I was missing the latest volume in these blog posts. This post will not be updated for changes over time.