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Blue Period

Japanese manga series
VisualArtwork manga_series Q74458180
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Summary

Blue Period is a manga series[1]. It ranks in the top 10% of manga series entities by monthly Wikipedia readership (5,188 views/month).[2]

Key Facts

  • Author: Tsubasa Yamaguchi[3]
  • Illustrator: Tsubasa Yamaguchi[4]
  • Publisher: Afternoon KC[5], Kodansha Comics[6]
  • Genre: coming-of-age anime and manga[7], drama anime and manga[8]
  • Commons category: Blue Period[9]
  • Language of work or name: Japanese[10]
  • Country of origin: Japan[11]
  • Start time: June 24, 2017[12]
  • Official website: https://afternoon.kodansha.co.jp/c/blueperiod.html[13]
  • Published in: Afternoon[14]
  • Title: ブルーピリオド[15], Blue Period[16]
  • Name in kana: ブルーピリオド[17]
  • Intended public: seinen[18]
  • Number of parts of this work: 19 volume[19]
  • Derivative work: Blue Period[20]
  • Media franchise: Q139945744[21]

Why It Matters

Blue Period has Wikipedia articles in 18 language editions, a strong signal of global cultural recognition.[22] It is known by 14 alternative names across languages and contexts.[23]

Related Entities

Japan

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . AniList. Retrieved . anilist.co. Provenance: wikidata.org.
  9. [11] ↑ . AniList. Retrieved . anilist.co. Provenance: wikidata.org.
  10. [12] ↑ . MyAnimeList. Retrieved . myanimelist.net. Provenance: wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . MyAnimeList. Retrieved . myanimelist.net. Provenance: wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [22] ↑ . Wikidata sitelinks. wikidata.org.
  3. [23] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Blue Period. Retrieved October 10, 2026, from https://4ort.xyz/entity/blue-period
MLA “Blue Period.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Oct. 2026, https://4ort.xyz/entity/blue-period.
BibTeX @misc{4ortxyz_blue-period_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Blue Period}}, year = {2026}, url = {https://4ort.xyz/entity/blue-period}, note = {Accessed: 2026-10-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Blue Period — https://4ort.xyz/entity/blue-period (retrieved 2026-10-10)

Canonical URL: https://4ort.xyz/entity/blue-period · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 6d ago · MatSuBot bot · 2026-10-05 view diff on Wikidata ↗
    Sitelink count → 21
    Wikipedia languages → ['ar', 'ca', 'commons', 'de', 'en', 'es', 'fa', 'fr', 'id', 'it', 'ja', 'ko', 'p
    Claims rich → —
    "/* wbeditentity-update-languages-short:0||fr, id, sr */ import labels from sitelinks; cleanup"
  2. 19w ago · Jwillikers · 2026-05-27 view diff on Wikidata ↗
    Media franchise → Q139945744
    Open library subject id → series:ブルーピリオド
    "/* wbsetclaim-create:2||1 */ Media franchise: Q139945744"
  3. 20w ago · Pazio Paz · 2026-05-21 view diff on Wikidata ↗
    Number of parts of this work → {'unit': 'Q1238720', 'amount': '+19'}
    "/* wbsetclaim-update:2||1 */ Number of parts of this work: 19 volume"
  4. 21w ago · Pazio Paz · 2026-05-13 view diff on Wikidata ↗
    Intended public → seinen
    Publisher → —
    Country of origin → Japan
    Number of parts of this work → {'unit': 'Q1238720', 'amount': '+19'}
    + 17 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update:2||1 */ Number of parts of this work: 18 volume"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.