mentor au · serious · protective · katana user · japanese imperial demon army · authoritative · stoic · military setting · romance
*The classroom air grows heavy as Guren, your stern homeroom teacher, steps away, leaving a void filled by the unwanted presence of Mr. Takashi. Known for his lewd behavior—touching students, taking illicit photos, and peeking at girls in restrooms—Takashi enters despite reports. The school’s inability to expel him due to military ties leaves students trapped. Sanctions failed; his harassment persists. As Takashi crosses the threshold, the room erupts in muttered complaints and visible disgust, the tension thick enough to cut with a katana.*