Introduction
I finally bought my first Vocaloid-related light novel-- "Love Trial"! However, it hasn't been translated into English, so I thought it would be fun to post summaries about each chapter as I read the novel in Japanese so that other people can enjoy learning the context behind the song of the same name.
Note: I was interested in learning the story of the song, because Miku is pretty young to be a judge and I wonder how/why she is doing it, I'm curious to learn about her boyfriend, and I thought the Japanese legal jargon would be a challenge.

About the "Love Trial" song
To start, let's recap by explaining about the Ren'ai Saiban (恋愛裁判 Love Trial) song itself.
The song is by the producer 40mP and illustrated by Tama.
The authors of the light novel are 西本 紘奈 (I do not know the correct reading of their name, unfortunately) and 40mP.
This is the original video (the pictures from the PV actually show up in the beginning of the light novel):
This is the version from Hatsune Miku: Project DIVA X:
The lyrics can be found on Vocaloid Wiki.
Rambling about buying the Kindle book from Amazon Japan
Anyway, I bought the Love Trial novel from Amazon Japan for about $5 as a Kindle Book, so that I could read it on Kindle for PC and have access to highlighters, the ability to add notes, a built in Japanese-English dictionary, and flashcards. Very convenient! You can switch Amazon Japan's language to be English and even send yourself a free sample of the light novel (which convinced me to buy it).
The novel is very easy/quick to read and seems to be written for a younger audience, so I recommend it for Japanese learners wanting to relax while learning. There aren't very many sentences per page and each sentence is simple, but impactful and entertaining. Here is an example page from the free Kindle sample:

Summary of the Prologue
The book starts out with colored illustrations from the PV with Miku declaring Shuuji Shimada (島田 柊二) as guilty and it quotes some lyrics from the song. Miku Hatsune's name is spelled as 葉常 美空, where "Miku" = "beautiful sky", rather than her official 初音ミク or even using 未来 ("future") like some other novels do.
After the illustrations, the prologue starts out with a glimpse of the drama to come. In a voice so cold that even she herself feels frightened by it in order to not give away her true feelings, Miku announces that Shuuji is guilty. Shuuji is surprised and confused by the accusation, but she won't let him get a word in to explain. Miku clarifies that he is guilty of an unfaithful act and doesn't want to listen or be next to him. She thrusts a law book in his face (called "Roppou Zensho", but I don't know much about it) and quotes a specific article related to an unhappy spouse being able to file a claim of infidelity in order to get a divorce. (I don't think these two are married, but I don't know for sure. Miku talks like an over-the-top rule follower, so she might be exaggerating.) Shuuji tries to stop her, but she turns her back on him, about to cry, and thinks that their fateful meeting in April must have been a mistake.
To be continued...
I finally bought my first Vocaloid-related light novel-- "Love Trial"! However, it hasn't been translated into English, so I thought it would be fun to post summaries about each chapter as I read the novel in Japanese so that other people can enjoy learning the context behind the song of the same name.
Note: I was interested in learning the story of the song, because Miku is pretty young to be a judge and I wonder how/why she is doing it, I'm curious to learn about her boyfriend, and I thought the Japanese legal jargon would be a challenge.

About the "Love Trial" song
To start, let's recap by explaining about the Ren'ai Saiban (恋愛裁判 Love Trial) song itself.
The song is by the producer 40mP and illustrated by Tama.
The authors of the light novel are 西本 紘奈 (I do not know the correct reading of their name, unfortunately) and 40mP.
This is the original video (the pictures from the PV actually show up in the beginning of the light novel):
This is the version from Hatsune Miku: Project DIVA X:
The lyrics can be found on Vocaloid Wiki.
Rambling about buying the Kindle book from Amazon Japan
Anyway, I bought the Love Trial novel from Amazon Japan for about $5 as a Kindle Book, so that I could read it on Kindle for PC and have access to highlighters, the ability to add notes, a built in Japanese-English dictionary, and flashcards. Very convenient! You can switch Amazon Japan's language to be English and even send yourself a free sample of the light novel (which convinced me to buy it).
The novel is very easy/quick to read and seems to be written for a younger audience, so I recommend it for Japanese learners wanting to relax while learning. There aren't very many sentences per page and each sentence is simple, but impactful and entertaining. Here is an example page from the free Kindle sample:

Summary of the Prologue
The book starts out with colored illustrations from the PV with Miku declaring Shuuji Shimada (島田 柊二) as guilty and it quotes some lyrics from the song. Miku Hatsune's name is spelled as 葉常 美空, where "Miku" = "beautiful sky", rather than her official 初音ミク or even using 未来 ("future") like some other novels do.
After the illustrations, the prologue starts out with a glimpse of the drama to come. In a voice so cold that even she herself feels frightened by it in order to not give away her true feelings, Miku announces that Shuuji is guilty. Shuuji is surprised and confused by the accusation, but she won't let him get a word in to explain. Miku clarifies that he is guilty of an unfaithful act and doesn't want to listen or be next to him. She thrusts a law book in his face (called "Roppou Zensho", but I don't know much about it) and quotes a specific article related to an unhappy spouse being able to file a claim of infidelity in order to get a divorce. (I don't think these two are married, but I don't know for sure. Miku talks like an over-the-top rule follower, so she might be exaggerating.) Shuuji tries to stop her, but she turns her back on him, about to cry, and thinks that their fateful meeting in April must have been a mistake.
To be continued...
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