My Instant Death Ability Is So Overpowered Foot Festival

Welcome back to the Foot Festival series. Another isekai for the Month of December, only this time with an boy named Yogiri Takatou being transported to an fantasy world by a Sage named Sion who shown just how horrible she and her world is by killing the adults for petty reasons and telling the students they are to be trained as sages to fight demons and complete missions with My Instant Death Ability is So Overpowered. Can Yogiri keep the female characters from dying so we can get to their lovely feet for our foot fun?