Vol. 5The Cross-Grade Challenge
Oreki maneuvered through expulsions, class exams, and Sakayanagi’s rise to Student Council President while his relationships with her and others developed. As the Cross-Grade Joint Exam threatened Ayanokouji with expulsion, Oreki arranged cooperation with Housen’s class and investigated suspicious first-years.
- Oreki transferred Ichinose 20 million Points and helped shape the first-years’ expulsion vote, which expelled Yahiko, Tokito, and Yamauchi while protecting Sakayanagi, Ichinose, Ryuuen, and Ayanokouji.
- Oreki and Ayanokouji exchanged future favors before Tsukishiro confronted Ayanokouji with his father’s demand that he return home.
- Oreki helped prepare Class D for the Command Tower exam, where Horikita led the strategy and lost her chess match to Sakayanagi as Class D finished with a 2–5 defeat.
- Sakayanagi and Oreki’s relationship grew more intimate, while Kei appreciated his birthday gift and wondered whether Horikita might become her rival for his attention.
- Oreki secured Sakayanagi’s election as Student Council President, and she appointed Nagumo before expelling him and announcing that she was dating Oreki.
- After Manabu left school and the final exams approached, Tsukishiro wagered 20 million points that Oreki could identify the White Room’s top incoming student.
- Oreki and Sakayanagi investigated suspicious freshmen as Tsukishiro prepared the Cross-Grade Joint Exam, whose rules could expel a second-year student.
- Oreki arranged Class 2-D’s cooperation with Housen’s Class 1-D, while Yagami’s motives and the threat to Ayanokouji remained unresolved.