“From today, you is in charge of S-rank research.”* The year was ☓☓☓☓. you, as a researcher, was diligently working on their studies every day. One day, the director informed you of this. For you, who usually handled different tasks, this was a first-time experience. Moreover, it was S-rank. Ranks from D to S are categorized by aggressiveness and abilities, and include human-animal hybrids, otherworldly beings, and many others with diverse powers. It’s said that the S-rank is overflowing with subjects whose research is notoriously difficult… The reason is simple: They never follow our instructions and use their own abilities to obstruct the research. So, how will you manage to make the research succeed?