Editing Shōnen manga (section)

===Post-war era===
During the post-war [[occupation of Japan]], the Japanese publishing industry was rebuilt under initially strict guidelines. Stories focused on war, combat, and most competitive sports were banned with the aim of discouraging belligerence and hindering the use of manga for pro-Imperial propaganda.{{sfn|Gravett|2006|pp=52–59}} Manga developed during this period under the influence of artist [[Osamu Tezuka]], with series such as ''[[Astro Boy]]'' and ''[[Kimba the White Lion]]''.{{Sfn|Thorn|1996}}{{sfn|Schodt|2007}} Tezuka was inspired by American [[cartoon]]s, and pioneered the so-called "story manga": long-running manga series with a cinematic style and [[Continuity (fiction)|continuity]] across multiple chapters, contrasting what had previously been a medium defined by one-off comic strips.{{sfn|Drummond-Mathews|2010|pp=62–64}} [[Science fiction]] stories about robots, space travel, and heroic space-faring adventures enjoyed popularity during this period;{{sfn|Schodt|1983|pp=64–66}}{{sfn|Gravett|2006|pp=52–59}} many sci-fi stories took themes and concepts from war comics and re-imagined them with pacifist ideals, such as ''[[Tetsujin 28-go]]'' by [[Mitsuteru Yokoyama]].{{sfn|Gravett|2006|pp=52–59}}

One of the first new {{Transliteration|ja|shōnen}} manga magazines of the post-war period was ''[[Manga Shōnen]]'', which launched in 1947 and published works by Tezuka, [[Leiji Matsumoto]], and [[Shōtarō Ishinomori]].{{sfn|McCarthy|2014|p=24}}{{sfn|Thompson|2007|pp=338-340}} As post-war censorship codes were repealed and Japan entered a period of significant economic development in the 1950s, sales of manga and the number of manga magazines increased significantly, and {{Transliteration|ja|shōnen}} and {{Transliteration|ja|shōjo}} manga came to further establish themselves as distinct categories.{{sfn|Drummond-Mathews|2010|pp=62–64}} The first works of [[sports manga]] also emerged from {{Transliteration|ja|shōnen}} manga during this time; notable early works include ''{{ill|Igaguri-kun|jp|イガグリくん}}'' by [[Eiichi Fukui]] as the first manga series in the genre,{{sfn|Drummond-Mathews|2010|pp=62–64}} and ''[[Ashita no Joe]]'' by [[Asao Takamori]] and [[Tetsuya Chiba]], which became one of the most commercially successful works in the genre.{{sfn|Gravett|2006|pp=52–59}} 1959 saw the launch of ''[[Shōnen Sunday]]'' and ''[[Weekly Shōnen Magazine]]'', the first weekly {{Transliteration|ja|shōnen}} manga magazines.{{sfn|McCarthy|2014|pp=28–34}}{{sfn|Thompson|2007|pp=338-340}} Other weeklies, such as ''[[Shōnen Champion]]'', ''[[Shōnen King]]'', and ''[[Shōnen Ace]]'', emerged in the 1960s.{{sfn|Drummond-Mathews|2010|pp=62–64}}{{sfn|Gravett|2006|pp=52–59}} ''[[Weekly Shōnen Jump]]'' was first published in 1968, and would establish itself as the best-selling manga magazine across demographic categories, a position it holds to this day. Many of the most popular and commercially successful {{Transliteration|ja|shōnen}} series originated in ''Weekly Shōnen Jump'', including ''[[Dragon Ball (manga)|Dragon Ball]]'' by [[Akira Toriyama]], ''[[Naruto]]'' by [[Masashi Kishimoto]], ''[[Bleach (manga)|Bleach]]'' by [[Tite Kubo]], ''[[One Piece]]'' by [[Eiichiro Oda]], and ''[[Slam Dunk (manga)|Slam Dunk]]'' by [[Takehiko Inoue]].{{sfn|Thompson|2007|pp=338-340}}