Part of the Comic Roman Mystery series. Volumes in series: 1: [Kokui no Ever](https://www.mangaupdates.com/series.html?id=30330) 2: [Mizu no Naka no Akai Ie](https://www.mangaupdates.com/series.html?id=11547) 3: 4: [Hana no You na Lilibet](https://www.mangaupdates.com/series.html?id=85289) 5: [Kokui no Hanayome](https://www.mangaupdates.com/series.html?id=86059) 6: Rita! Dare o Matsu 7: [Yoru no Triangle](https://www.mangaupdates.com/series.html?id=87548) 8: [Akuryou ga Naku Toki](https://www.mangaupdates.com/series.html?id=98996) 9: [Dark Zone](https://www.mangaupdates.com/series.html?id=98968) 10: [Noroi no Suzu no Oto](https://www.mangaupdates.com/series.html?id=98974) 11: [Shisha e no Konyaku Yubiwa](https://www.mangaupdates.com/series.html?id=98981) 12: [Satsujin no Dessin](https://www.mangaupdates.com/series.html?id=74176) 13: [Kamen no Shouzou](https://www.mangaupdates.com/series.html?id=92738) 14: [Kurotenshi Shinsera](https://www.mangaupdates.com/series.html?id=85338) 15: [Shiroi Kamen](https://www.mangaupdates.com/series.html?id=85233) 16: [Kage o Koroshita Onna](https://www.mangaupdates.com/series.html?id=92809) 17: [Akai G Sen](https://www.mangaupdates.com/series.html?id=63077) 18: Kyōfu no Ōdokei 19: [Chinurareta Kuromisa](https://www.mangaupdates.com/series.html?id=99197) 20: [Shiryou Paulet no Koi](https://www.mangaupdates.com/series.html?id=85343) 21: [Eriza wa Ake to Moeta](https://www.mangaupdates.com/series.html?id=86060) 22: Kanashibari ga Kuru! 23: [Bara no Satsui](https://www.mangaupdates.com/series.html?id=99183) 24: [Yuurei Bunjou Juutaku](https://www.mangaupdates.com/series.html?id=93028) 25: [Kuroi Kodama](https://www.mangaupdates.com/series.html?id=99103) 26: [Youjo no Yuuwaku (SHIKANO Keiko)](https://www.mangaupdates.com/series.html?id=99196) 27: [Ningyou no Yobu Koe](https://www.mangaupdates.com/series.html?id=99118) 28: [Moebius no Yakata](https://www.mangaupdates.com/series.html?id=99198) 29: [Magnolia no Tenshi](https://www.mangaupdates.com/series.html?id=99181) 30: Yaminohate Kara 31: [Yomi kara no Koe](https://www.mangaupdates.com/series.html?id=63086) 32: 33: [Hakuchuumu (NARUMO Atsuko)](https://www.mangaupdates.com/series.html?id=92811) 34: [Futagoza Umare](https://www.mangaupdates.com/series.html?id=85287) 35: [Makyou no Yggdrasil](https://www.mangaupdates.com/series.html?id=99288) 36: [Mizuki no Mori](https://www.mangaupdates.com/series.html?id=99282) 37: [Chi no Shouzou](https://www.mangaupdates.com/series.html?id=99283) 38: [Chimamire no Takeningyou](https://www.mangaupdates.com/series.html?id=99263) 39: Norowareta Keizu 40: 41: Majo Iruma 42: Kyōto Kara Kita Rei Shōjo 43: [Kuro no Dendou](https://www.mangaupdates.com/series.html?id=99279) 44: [Anubis no Maryou](https://www.mangaupdates.com/series.html?id=99285) 45: [Kieta Hanayome](https://www.mangaupdates.com/series.html?id=99365)

In this world, the one who becomes a blue demon and makes himself humbled. The blue demon is a demon of lust. With the desire to meet a secretly up-and-coming architect, a literary magazine editor would use his work for love and attend his home. But his fiancé also lives in the house... Will she become a n blue demon! ? Contains 4 titles including the title work.