Alyosha Stalina, a foreign exchange student from Solessia, has been enrolled in a Japanese high school for three months. Despite her background, Alyosha struggles to fit in with her peers due to her unfriendly demeanor and cold personality. This is understandable, as Alyosha was trained as an assassin from the young age of five, having been taken in by officials from Estolakia - a country that had suffered from Solessia's attacks.
Currently, Alyosha's mission is to assassinate the President of Solessia, who is set to attend the high school she has infiltrated. However, her plans are foiled, and she is ordered to continue her studies as a regular student. This poses a challenge for Alyosha, as she has never had the chance to learn how to behave like a typical teenager, having only been trained in the art of assassination.
As she struggles to blend in, the question remains - will Alyosha be able to complete the most challenging mission of her career thus far?
