The Seven Goodbyes Arc is the seventh story arc in 5Toubun no Hanayome series. The arc describes the falling out between the Nakano Quintuplets and their problems despite the upcoming exam.
Seven Goodbyes Arc is covered in Volume 5 and Volume 6.
Summary
Despite the upcoming exam, Nino still has trouble following Fuutarou's study session, even trying to avoid it. One day, Nino lashes out and gets into a huge fight with her sisters, resulting in both her and Itsuki leaving the apartment. Then, there’s Yotsuba, who is still shackled by the school's track team.