炎の蜃気楼 (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: A high school student, Yuzuru, is targeted for his body due to the resurrection of the demon general, Takeda Shingen. His best friend, Takaya, confronts the demon as a reincarnation of Shingen's sworn enemy!　A masterpiece horror fantasy in which the deceptive spirits of the Sengoku period (the era of the Warring States) abound in the present day.

(Translator: DeepL)