Prequel to the first song in the Vocaloid series, “[Murder Case at the Mansion of Antiquarian Books](https://www.youtube.com/watch?v=nmgQAr39EXM),” and follows the events between the schoolgirl detective who loves mystery novels, Hanamoto Hibari, and the extremely sadistic mystery novel writer, Kudou Renma. As the high school is busy with preparations for the Culture Festival, a female student is found on the roof, collapsed and bleeding. Written in blood is a single “X.” Is this an accident? Or a case? Hibari sets out to uncover the truth.

A sequel to "Dark Green," which depicts the success of hero Luon, who continues to fight the unidentified nightmare Zel that attacks in the dream world "R-Dream." Several decades have passed since the turmoil of the previous work, and the number of people who remember "R-Dream" has decreased. Mai-chan, a high school girl who lives a normal life, meets a boy who got lost in her dream. She often sees the boy in her dreams after that, but the dreams she has had since she met the boy are all nightmares chased by something ... The boy Mai met was the hero Luon of "R-Dream" who lost her memory and power.

#Cover illustration: Nikumaru 1. Mesugakishiki Mental Management (メスガキ式メンタルマネジメント) \[Takahashi Potato (高橋ぽてと)\] 2. Aori, Aorare (あおり、あおられ) \[Shioyaki Ayu (汐焼あゆ)\] 3. Gakincho Boot Camp (がきんちょブートキャンプ) \[Kuma Pantsu (くまパンツ)\] 4. Saki-chan wa Kamatte Hoshii (咲ちゃんはかまってほしい) \[Neko Mattan (ねこ末端)\] 5. Chiyu Shite Hoshii (ちゆして欲しい) \[Susan (吸斬)\] 6. Shikigami Youko no Omoi Koto (式神妖狐の想い事) \[Jinja Ale (神社えーる)\] 7. Yamikei Mesugaki Haishinsha wa Oniisan wo Sokubaku Shitai (病み系メスガキ配信者はお兄さんを束縛したい) \[Ookido Karo (大成戸カロ)\] 8. Failed ♥ Quest (FAILED ♥ QUEST) \[Kanmuri (かんむり)\] 9. Yogaru Cupid (ヨガるキューピット) \[Yawaraka Black (やわらかブラック)\] 10. Uchuu wa Mesugaki de Mawatteiru (宇宙はメスガキで回っている) \[Sasamashin (ササマシン)\] 11. Pudding Nante Iranai Mon! (プリンなんていらないもん!) \[Gouda Nagi (剛田ナギ)\]

https://mechacomic.jp/books/208130