Killniru ~Sensei ga Koroshiya tte Hontou desu ka?~

Takeishi is widely revered as a legendary assassin, a figure whose deadly reputation precedes him in the criminal underworld. Capitalizing on this fearsome name, he is appointed as an instructor at Hitman Girls' High School, a specialized and secretive academy dedicated entirely to training the next generation of professional killers. The students look up to their new teacher with awe and intimidation, fully expecting to learn lethal techniques from a master of the craft. However, behind the imposing facade lies a startling secret that threatens to unravel everything. Takeishi’s true identity is far removed from the mythos surrounding his name. He is not a hardened killer or a veteran of the shadows, but rather a completely ordinary person who somehow found himself thrust into this perilous role. Now forced to maintain the illusion of an elite assassin while standing before a classroom of aspiring hitwomen, Takeishi faces an impossible dilemma. Every lesson is a tightrope walk over disaster, as one wrong move or exposed lie could mean certain death. To survive his tenure at this dangerous institution, he must rely entirely on his wits, bluffing his way through each day while desperately trying to keep his harmless reality hidden from those trained to kill.