LogFAQs > #979952163

Probably the whole Megiddo scene from Tensura. More specifically when Folgen sets out to attempt using his skill to command the remaining soldiers to serve as a cover for retreat, & he just flops to the ground, as he's basically lobotomized in an instant; like many of the soldiers there, he was dead before he could even realize it happened. Even given the context & motive, it shows just how ruthless Rimuru could get when he needs to, especially given that his acts led to him acquiring a skill that allowed him to instantly end the lives of those who were too afraid to resist him; it's the kind of thing you don't really expect from a protagonist that isn't generally portrayed as being on the evil, villain, or anti-hero spectrum..