D.E.M.O.N.S: Getting Summoned Weekly isn't so Bad - Chapter 16: What Kind of Succubus Calms People?

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.

If life could repeat itself, what would you do?Would you repeat your first life and stay a normal average joe? Perhaps your gaze will betray the life you’ve already lived, but you remain insignificant and unknown, stretching your neck up high to watch the furling clouds roll by?Or will you make the world your stage, stir up every cloud and wind under all the heavens, making the entire world your captive audience as you dance, making people’s hearts pound with your every move?Composing my own laws, establishing the order I desire…a human life is a measly ten decades, so why don’t I light the candle that is my life and set this world ablaze!!

When we met for the first time in our first year of high school, he saw my contempt, but silently continued to clean;

Shi Yu, an Archaeologist and Mythologist, crossed into a foreign world where Noble Beasts were the mainstream.