Younger Sister's Day

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Younger Sister's Day
Observed byJapan
TypeSecular
Significancecelebrates the affection towards younger sisters from siblings and family
DateSeptember 6
FrequencyAnnual
First time1991; 33 years ago (1991)
Started byKunio Hatada
Related to

Younger Sister's Day (妹の日, Imōto no Hi) is a Japanese holiday established by manga artist and author Kunio Hatada in 1991, celebrated on September 6 of each year.

History[edit]

The holiday was coined around 1991,[1][2][3] after several works were published by Hatada delving into research about 'brother and sister types', such as "The Power of Younger Sisters—a Sociological study". Among his findings, he saw that women who succeed in activities such as sports and entertainment tend to be younger sisters themselves.

The specific date was chosen based on the astrological sign of Virgo, which Hatada considered representative of the 'universally loved sweetness symbolized by little sisters'. In particular, he explained[4] that September 6 was designated because it's exactly one day before the Virgo constellation is halfway through its average commonly accepted length, from August 23 to September 22.

In 1992, a committee was designated with the task of promoting this holiday.[5]

Related events[edit]

A competition was held during the first iteration of the holiday in 1991, titled "Japan's Little Sister Grandprize", resulting in winners Yuko Arimori and Gin Kanie.[2]

In 2018, the voice cast and character sheets for upcoming anime My Sister, My Writer was revealed to the public on that year's Younger Sister's day.[6]

Around the same holiday in 2019, a special consecutive run of two little sister-related anime, Oreimo and Eromanga Sensei, was aired on TV streaming website Abema.[7][8] In 2020, the company announced their plans to add two more shows featuring little sister characters to their Younger Sister's day special broadcast, specifically Yosuga no Sora and Himouto! Umaru-chan, which would be available for free on the platform.[9]

References[edit]

  1. ^ 9月6日は妹の日! 『鬼滅の刃』『Re:ゼロから始める異世界生活』『ワンパンマン』など、人気作品から妹キャラクターのコスプレをピックアップ!. Animate Times (in Japanese). Retrieved September 5, 2021.
  2. ^ a b 9月6日は妹の日。大切な妹のことを想う1日にしよう. tenki.jp (in Japanese). Retrieved September 5, 2021.
  3. ^ 【検証】9月6日は「妹の日」である! 兄として威厳と愛に満ちたLINEを送ってみたらこうなった. Rocket News 24 (in Japanese). September 5, 2014. Retrieved September 10, 2022.
  4. ^ Fukami, Reiko (September 6, 2017). 生まれた順で性格が決まる!?本日9月6日は「妹の日」です. tenki.jp (in Japanese). Retrieved September 10, 2022.
  5. ^ Hatada, Kunio (1992). Chotto igaina tōkyō zatsugaku ちょっと意外な東京雑学: 街に出よう! (in Japanese). Dobun Shoin [ja]. ISBN 4-8103-7065-8. OCLC 674059900.
  6. ^ 9月6日は妹の日!「俺が好きなのは妹だけど妹じゃない」追加キャストに小倉唯ら. Comic Natalie (in Japanese). Retrieved September 10, 2022.
  7. ^ "妹の日"特集!アニメ『俺の妹がこんなに可愛いわけがない』&『エロマンガ先生』一挙配信決定 TV未放送エピソードも. Abema Times (in Japanese). Retrieved September 10, 2022.
  8. ^ 9月6日は"妹の日"! 『俺の妹』『エロマンガ先生』一挙配信決定. Dengeki Online (in Japanese). Retrieved September 10, 2022.
  9. ^ 「ヨスガノソラ」9月6日"妹の日"にABEMAで、"妹アニメ"6作の無料配信も. Comic Natalie (in Japanese). Retrieved September 10, 2022.