, also called dorama, are television programs that are a staple of Japanese television and are broadcast daily. All major TV networks in Japan produce a variety of drama series including romance, comedy, detective stories, horror, jidaigeki, thriller, and many others. Single episode, or "tanpatsu" dramas that are usually two hours in length are also broadcast. For special occasions, there may be a one or two-episode drama with a specific theme, such as one produced in 2015 for the 70-year anniversary of the end of World War II.
Japanese drama series are broadcast in three-month seasons: winter (January–March), spring (April–June), summer (July–September), and autumn or fall (October–December). Some series may start in another month though it may still be counted as a series of a specific season. The majority of dramas are aired weekdays in the evenings around 9pm through 11pm. Daytime dramas are typically broadcast daily, and episodes of the same drama can be aired daily for several months, such as NHK's asadora, which usually span six months each. Evening dramas air weekly and are usually ten to fourteen hour-long episodes.
In many cases, instead of being episodic, drama series are serial, with one story running throughout the episodes. Since they are of a fixed length, dramas have a definite ending, and since they are relatively long, they can explore character, situation, and interesting dialog in a way that is less possible in most movies. Structurally, Japanese dramas can be compared to American or British miniseries. Dramas are rarely canceled mid-season, but they usually do not continue into the next season, even if extremely popular. Popular dramas do, however, often give rise to "specials" that are made after the final episode if the show has been a huge success. Some genres such as jidaigeki, police procedurals, or family dramas, however, feature series that are episodic or that sometimes continue for years on end, with Mito Kōmon, Taiyō ni Hoero!, or Wataru Seken wa Oni Bakari being famous examples.