The school day begins with a rainstorm, and the students nervously await the arrival of a new student. The new student, named sena, is a member of the gang known as the "black kings" and has been missing for two years. He is introduced to the other students as a "sweet, bitter, sweet flavour" created by "Andrian" and "Adilia" . He tells them that they will have to take a test in the next two weeks, and he declares that he has thoroughly prepared for the test. He praises the students for their hard work and praises the teacher, who is always attentive to the students' needs. .