
'When One Day I Will Sleep' is a 2019 high school fantasy romance drama directed by Ryo Miyawaki, Hidemitsu Miyamoto, and Masayuki Kokuryo. It is based on the novel of the same name by Inu Jun and stars Karen Otomo and Yuta Koseki. The story follows Morino Hotaru, a high school student who has been in love with her classmate, Otaka Ren, for years but has been unable to confess her feelings. After a bus accident during a school trip, Hotaru wakes up to find herself dead and confronted by a grim reaper named Kuro, who gives her 49 days to resolve her lingering attachments to her past life. With only 19 days left due to her month-long coma, Hotaru embarks on a journey to free herself from her mortal life and accept her death.
| Characteristics | Values |
|---|---|
| Title | When One Day I Will Sleep (Native Title: "Itsuka, Nemuri ni Tsuku Hi") |
| Director | Ryo Miyawaki |
| Year | 2019 |
| Genre | Romantic Comedy, Youth, Fantasy, Supernatural |
| Tags | Ghost, Grim Reaper Male Lead, Innocent Female Lead, Secret Crush, Death, Bus Accident, High School, Student Supporting Character |
| Number of Episodes | 6 |
| Original Network | Fuji TV |
| Score | 7.9/10 |
| Content Rating | 13+ - Teens 13 or older |
| Main Role | Morino Hotaru |
| Main Role | Yamamoto Shiori |
| Support Role | Kakugari |
| Support Role | Nakayama Makiko |
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What You'll Learn

A high school fantasy romance drama
"When One Day I Will Sleep" is a high school fantasy romance drama based on the novel of the same name by Inu Jun. The story follows Morino Hotaru, a high school student who has spent years harbouring a crush on her classmate, Otaka Ren, but has been too afraid to confess her feelings. On a school trip, their bus gets into an accident, and Hotaru wakes up to find herself confronted by a grim reaper named Kuro, who tells her that she has died. Kuro explains that Hotaru has 49 days to resolve the three lingering attachments she has to her past life, or she will become a ghost, trapped in the mortal world forever. The catch? Hotaru has already been asleep for a month, leaving her with only 19 days to resolve her regrets and say her goodbyes.
The drama stars Karen Otomo as Morino Hotaru and Yuta Koseki as Kuro. It is directed by Ryo Miyawaki, Hidemitsu Miyamoto, and Masayuki Kokuryo, and aired on Fuji TV in 2019. The series has been well-received by viewers, who have praised its acting, plot twists, and emotional storytelling.
As the story unfolds, we learn that Hotaru has been an expert in unrequited love, too shy to express her true feelings to Ren. In the wake of the bus accident, she is shocked to find herself facing her own mortality and the daunting task of letting go of her earthly attachments in just 19 days. With the help of Kuro, she embarks on a journey to confront her past and find closure. Along the way, she discovers the true value of her relationships and the importance of seizing the day.
The drama explores themes of love, friendship, loss, and self-discovery. It captures the essence of high school life, the complexities of young romance, and the challenges of navigating emotions and relationships. Through Hotaru's journey, the series delivers a powerful message about the importance of living each day to the fullest and not taking life for granted.
"When One Day I Will Sleep" is an emotional rollercoaster, tugging at the heartstrings of its viewers as they witness Hotaru's race against time to find peace and closure. The series also offers a unique twist on the fantasy genre, blending elements of mystery and suspense as Hotaru uncovers the truth behind her accident and the role of those closest to her.
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A 2019 film
The 2019 film "When One Day I Will Sleep" is based on the novel of the same name by Inujun (also known as Inu Jun). It is a high school fantasy-romance drama directed by Ryo Miyawaki, Hidemitsu Miyamoto, and Masayuki Kokuryo. The film stars Karen Otomo as Morino Hotaru, a second-year high school student who has spent years harbouring a crush on her classmate, Otaka Ren (played by Kai Shouma). Unable to confess her feelings, Hotaru becomes an expert in unrequited love. During a school trip with Ren and her best friend, Yamamoto Shiori (played by Kita Noa), their bus gets into an accident, and Hotaru wakes up to find herself apparently dead, with a grim reaper named Kuro (played by Yuta Koseki) informing her that she has 49 days to resolve her three lingering attachments to her past life. With a month already gone by, Hotaru has only 19 days left to free herself from these attachments, or she will become a ghost bound to the world forever.
The film received positive reviews, with viewers praising the acting, plot twists, and pacing. One reviewer noted that the film's length was "perfect", feeling like "more of a movie than a drama" at just around 2 hours long. The music and soundtrack were also well-received, described as "suitable" and "great".
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A 6-episode miniseries
When One Day I Will Sleep: A 6-Episode Miniseries
Episode 1: "The Accident"
The series opens with our protagonist, Morino Hotaru, a high school student who has spent years harbouring a secret crush on her classmate, Otaka Ren. On a school trip, their bus gets into an accident, and Hotaru blacks out. She wakes up to find herself face-to-face with a mysterious figure dressed in black, who introduces himself as Kuro, a grim reaper. Hotaru is shocked to learn that she has died and now has only 19 days to resolve her three lingering attachments to her past life or risk becoming a ghost forever.
Episode 2: "Lingering Attachments"
Hotaru reflects on her past life and the three people she has unfinished business with: her best friend, Yamamoto Shiori; her crush, Otaka Ren; and an unknown figure from her past. As she navigates her limited time, she struggles with the weight of her regrets and the difficulty of saying goodbye.
Episode 3: "Unrequited Love"
Hotaru confides in Kuro about her secret crush on Ren and her inability to confess her feelings. Kuro helps Hotaru confront her fears and take a leap of faith, encouraging her to express her love before it's too late. Meanwhile, we learn more about Kuro's backstory and his role as a grim reaper.
Episode 4: "The Best Friend"
The focus shifts to Hotaru's relationship with her best friend, Yamamoto Shiori, and the complexities of their bond. As Hotaru tries to resolve her regrets with Shiori, we explore the dynamics of their friendship, the challenges they faced, and the impact they had on each other's lives.
Episode 5: "The Unknown Past"
Hotaru and Kuro delve into the mystery of the unknown figure from Hotaru's past. Through flashbacks, we uncover a hidden connection and the truth behind their unresolved history. The clock is ticking as Hotaru tries to make amends and find closure.
Episode 6: "Final Farewell"
In the series finale, Hotaru confronts her own mortality and the prospect of never waking up. As her time runs out, she must make peace with her past, accept her fate, and embrace the unknown. The final episode explores themes of acceptance, letting go, and the power of love and friendship beyond death.
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Based on a novel by Inujun
"When One Day I Will Sleep" is a 2019 high school fantasy romance drama directed by Ryo Miyawaki, Hidemitsu Miyamoto, and Masayuki Kokuryo. It is based on the novel of the same name by Inujun.
The story follows Morino Hotaru, a second-year high school student who has spent years harbouring a crush on her classmate, Otaka Ren. Unable to confess her feelings, she becomes an expert in unrequited love. During a school trip with Ren and her best friend, Yamamoto Shiori, their bus gets into an accident. Hotaru wakes up to find a man in black standing over her, who introduces himself as Kuro, a grim reaper. He tells her that she has died and has 49 days to resolve her three lingering attachments to her past life or become a ghost bound to the world forever. With only 19 days left after sleeping for a month, Hotaru sets out to free herself from her mortal life.
The drama stars Karen Otomo as Morino Hotaru and Yuta Koseki as Kuro. It was well-received, with viewers praising the acting, plot twists, and pacing.
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Directed by Ryo Miyawaki
The 2019 high school fantasy romance drama "When One Day I Will Sleep" is directed by Ryo Miyawaki, Hidemitsu Miyamoto, and Masayuki Kokuryo. Adapted from the novel of the same name by Inu Jun, the series follows the story of a high school student, Morino Hotaru, who has spent years harbouring a crush on her classmate, Otaka Ren, without the courage to confess her feelings. On a school trip with Ren and her best friend, an accident occurs, and Hotaru wakes up to find herself face-to-face with a grim reaper, Kuro, who informs her of her death and the need to resolve lingering attachments to her past life.
Ryo Miyawaki's direction of "When One Day I Will Sleep" effectively captures the emotional turmoil of the protagonist, Morino Hotaru, played by Karen Otomo. Miyawaki's visual style and pacing enhance the story's impact, allowing viewers to connect with Hotaru's struggle to come to terms with her mortality and unfinished business.
The series' supernatural premise is elevated by Miyawaki's direction, which balances the fantasy elements with the very real and relatable emotions of the characters. The production design, including the grim reaper's ominous black attire, further enhances the otherworldly atmosphere.
Miyawaki's collaboration with fellow directors Hidemitsu Miyamoto and Masayuki Kokuryo results in a cohesive and compelling narrative that explores themes of love, loss, and the importance of letting go. The series' structure, with its six episodes, each around 20 minutes long, contributes to a concise and engaging presentation of the story.
Ryo Miyawaki's direction in "When One Day I Will Sleep" showcases a talent for visual storytelling and an understanding of the source material, contributing to a well-received adaptation that resonates with its audience.
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Frequently asked questions
Morino Hotaru, a high school student, has been in love with her classmate, Otaka Ren, for years but has never confessed her feelings. After a bus accident during a school trip, Hotaru wakes up to find a grim reaper named Kuro standing over her. Kuro tells her that she is dead and must resolve three lingering attachments to her past life in 49 days or become a ghost forever. However, having been asleep for a month, Hotaru only has 19 days left to resolve her regrets.
*When One Day I Will Sleep* is a youth, fantasy, supernatural, and romance drama.
The cast members include Karen Otomo as Morino Hotaru, Yuta Koseki as Kuro, Kai Shouma as Otaka Ren, and Kita Noa as Yamamoto Shiori.

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