Itsuka, Nemuri ni Tsuku Hi (2019)


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A second year high school student, Morino Hotaru has spent the last few years crushing on her classmate, Otaka Ren. Unable to find the courage to confess her feelings, Hotaru has become something of an expert in unrequited love. One day, while on a school trip with Ren and her best friend, Yamamoto Shiori, their bus gets into an accident. Blacking out for a bit, Hotaru wakes up to find a young man, dressed fully in black, standing over her. Shocked by his sudden appearance, Hotaru shoves him away but he refuses to leave. Introducing himself as Kuro, he announces that he’s a grim reaper and that Hotaru is dead. As if the news of her death wasn’t shocking enough, Kuro goes on to explain that she has 49 days in which to resolve the three lingering attachments she has to her past life. If she fails to resolve these lingering regrets within the given time, she’ll become a ghost, bound to this world, unable to rest in peace for all eternity. There’s just one problem, Hotaru has been asleep for a month and now has only nineteen days in which to resolve her regrets. Difficult as it seems, Hotaru sets out to free herself from the last, lingering attachments to her mortal life. With time running out, she must hurry, but saying goodbye is hard and saying “I love you” feels nearly impossible!
A second year high school student, Morino Hotaru has spent the last few years crushing on her classmate, Otaka Ren. Unable to find the courage to confess her feelings, Hotaru has become something of an expert in unrequited love. One day, while on a school trip with Ren and her best friend, Yamamoto Shiori, their bus gets into an accident. Blacking out for a bit, Hotaru wakes up to find a young man, dressed fully in black, standing over her. Shocked by his sudden appearance, Hotaru shoves him away but he refuses to leave. Introducing himself as Kuro, he announces that he’s a grim reaper and that Hotaru is dead. As if the news of her death wasn’t shocking enough, Kuro goes on to explain that she has 49 days in which to resolve the three lingering attachments she has to her past life. If she fails to resolve these lingering regrets within the given time, she’ll become a ghost, bound to this world, unable to rest in peace for all eternity. There’s just one problem, Hotaru has been asleep for a month and now has only nineteen days in which to resolve her regrets. Difficult as it seems, Hotaru sets out to free herself from the last, lingering attachments to her mortal life. With time running out, she must hurry, but saying goodbye is hard and saying “I love you” feels nearly impossible!
49 Days

8.2 2011

A girl dies and meet the grim reaper who tell her that she has 49 day to say goodbye and resolve things she regrets 49 is more about solving the case of her death while Itsuka, Nemuri Ni Tsuku Hi  is more or less only about letting go and leave without regrets (which is also a part of 49 days). The relationship of FL and grim reaper is quite similar.
49 Days

8.2 2011

Shin Ji Hyun was enjoying absolute bliss as she was about to marry her fiancé, Kang Min Ho, but her perfect life is shattered when she gets into a car accident that leaves her in a coma. She is given a second chance at life by a person called The Scheduler, but it comes with a condition: she has to find three people outside of her family who would cry genuine tears for her. In order to do this, she borrows the body of Yi Kyung, a part-time employee at a convenience store for 49 days.
Ghost

7.3 2010

Korean potter Jun Ho meets successful young entrepreneur Nanami in Tokyo. The couple falls in love and soon marry. A year after their marriage, tragedy strikes when Nanami is killed on her way home. Nanami, not ready to leave this world, remains in this world in spirit form. During this time she learns that her death wasn't an accident and her husband Jun Ho is in imminent danger. Unable to contact any humans except a psychic named Unten, can Nanami warn Jun Ho before harm comes his way?
Kariya Yuri is an airhead who falls head-over-heels in love with Aono Ryuhei after their very first meeting. Yuri's happiness knows no bounds when Aono surprisingly ends up agreeing to go out with her, and thus she starts to enjoy her perfect relationship with her perfect boyfriend. Alas, misfortune strikes when only two weeks into their relationship, Aono tragically dies in an accident. But is something as simple as death really enough to keep the two lovers apart?
Angel

6.8 2006

Romantic fantasy film starring Fukada Kyoko and based off of the best selling series of written works by Sakurazawa Erika. In a corner of Tokyo various hopeless romantics are reminded of the love, friendship, and familial love in the world. A convenience store clerk named Kato wants nothing more than to find a girlfriend . . . however things never go as he plans. Meanwhile, single father Yoshikawa treasures nothing more in this world than is daughter. He'd like to remarry to help her, but his love Kazumi confesses that she just doesn't like children. On the other hand, junior high school student Mizuho has become the object of bullying after a slight misunderstanding. Then one day an angel came down to visit them.
Similar tone and themes of youth and self-discovery. Both are about high-school aged characters with a plot that mystery/mystical elements in the plot. One is about a body-swap, the other is a about a ghost.
Soma Yui and Torino Naoki were childhood friends, but they met again as adults. Just as he decides to propose to Yui, Naoki suddenly disappears from Yui's sight after being embroiled in a mysterious incident. Naoki continues to wander in this world as a spirit without knowing that he has died. Naoki asks Uozumi Yuzuru, a detective who is the only one able to see Naoki, to convey his feelings to Yui, but Naoki ends up breaking up without properly saying "thank you, goodbye, and I love you" to the person he loves the most.
A single postbox stands alone in a wide field. It is postbox where many people who have lost their loved ones drop in letters for those in heaven. Ha Na is one of those people who comes again to mail a letter. She meets a young man called Jae Joon there. He tells Ha Na that he is the 'postman to heaven' and proposes that she help him with his work. His job is to convey letters and heal the hearts of the senders. As Ha Na spends time with him, her emotional scars are healed and the two of them seem attracted to each other. However, at that moment, Ha Na realises that Jae Joon has a big secret. Why is he working as a postman?
A second year high school student, Morino Hotaru has spent the last few years crushing on her classmate, Otaka Ren. Unable to find the courage to confess her feelings, Hotaru has become something of an expert in unrequited love. One day, while on a school trip with Ren and her best friend, Yamamoto Shiori, their bus gets into an accident. Blacking out for a bit, Hotaru wakes up to find a young man, dressed fully in black, standing over her. Shocked by his sudden appearance, Hotaru shoves him away but he refuses to leave. Introducing himself as Kuro, he announces that he’s a grim reaper and that Hotaru is dead. As if the news of her death wasn’t shocking enough, Kuro goes on to explain that she has 49 days in which to resolve the three lingering attachments she has to her past life. If she fails to resolve these lingering regrets within the given time, she’ll become a ghost, bound to this world, unable to rest in peace for all eternity. There’s just one problem, Hotaru has been asleep for a month and now has only nineteen days in which to resolve her regrets. Difficult as it seems, Hotaru sets out to free herself from the last, lingering attachments to her mortal life. With time running out, she must hurry, but saying goodbye is hard and saying “I love you” feels nearly impossible!
Lavender

7.0 2000

A second year high school student, Morino Hotaru has spent the last few years crushing on her classmate, Otaka Ren. Unable to find the courage to confess her feelings, Hotaru has become something of an expert in unrequited love. One day, while on a school trip with Ren and her best friend, Yamamoto Shiori, their bus gets into an accident. Blacking out for a bit, Hotaru wakes up to find a young man, dressed fully in black, standing over her. Shocked by his sudden appearance, Hotaru shoves him away but he refuses to leave. Introducing himself as Kuro, he announces that he’s a grim reaper and that Hotaru is dead. As if the news of her death wasn’t shocking enough, Kuro goes on to explain that she has 49 days in which to resolve the three lingering attachments she has to her past life. If she fails to resolve these lingering regrets within the given time, she’ll become a ghost, bound to this world, unable to rest in peace for all eternity. There’s just one problem, Hotaru has been asleep for a month and now has only nineteen days in which to resolve her regrets. Difficult as it seems, Hotaru sets out to free herself from the last, lingering attachments to her mortal life. With time running out, she must hurry, but saying goodbye is hard and saying “I love you” feels nearly impossible!
A second year high school student, Morino Hotaru has spent the last few years crushing on her classmate, Otaka Ren. Unable to find the courage to confess her feelings, Hotaru has become something of an expert in unrequited love. One day, while on a school trip with Ren and her best friend, Yamamoto Shiori, their bus gets into an accident. Blacking out for a bit, Hotaru wakes up to find a young man, dressed fully in black, standing over her. Shocked by his sudden appearance, Hotaru shoves him away but he refuses to leave. Introducing himself as Kuro, he announces that he’s a grim reaper and that Hotaru is dead. As if the news of her death wasn’t shocking enough, Kuro goes on to explain that she has 49 days in which to resolve the three lingering attachments she has to her past life. If she fails to resolve these lingering regrets within the given time, she’ll become a ghost, bound to this world, unable to rest in peace for all eternity. There’s just one problem, Hotaru has been asleep for a month and now has only nineteen days in which to resolve her regrets. Difficult as it seems, Hotaru sets out to free herself from the last, lingering attachments to her mortal life. With time running out, she must hurry, but saying goodbye is hard and saying “I love you” feels nearly impossible!
Secret Angel

7.2 2012

L, an angel who’s endlessly fascinated with the human world, gets into trouble when she unthinkingly saves the life of Han Shi Yeong, a man who was meant to die. To make up for her mistake she must guard him on Earth for one hundred days and keep him safe from Hwan, a death god who is required to collect his soul. Both supernatural beings must contend with the knowledge that whichever one of them fails by the end of the hundred days will be erased from existence, and the longer they stay on Earth the further their powers fade and the more human they become.
Deja Vu

7.0 2013

A second year high school student, Morino Hotaru has spent the last few years crushing on her classmate, Otaka Ren. Unable to find the courage to confess her feelings, Hotaru has become something of an expert in unrequited love. One day, while on a school trip with Ren and her best friend, Yamamoto Shiori, their bus gets into an accident. Blacking out for a bit, Hotaru wakes up to find a young man, dressed fully in black, standing over her. Shocked by his sudden appearance, Hotaru shoves him away but he refuses to leave. Introducing himself as Kuro, he announces that he’s a grim reaper and that Hotaru is dead. As if the news of her death wasn’t shocking enough, Kuro goes on to explain that she has 49 days in which to resolve the three lingering attachments she has to her past life. If she fails to resolve these lingering regrets within the given time, she’ll become a ghost, bound to this world, unable to rest in peace for all eternity. There’s just one problem, Hotaru has been asleep for a month and now has only nineteen days in which to resolve her regrets. Difficult as it seems, Hotaru sets out to free herself from the last, lingering attachments to her mortal life. With time running out, she must hurry, but saying goodbye is hard and saying “I love you” feels nearly impossible!