Honeko Akabane's Bodyguards 4

All the students in Class 3-4 of Sosoji High School are Honeko Akabane's bodyguards, and as one of them, Arakuni Ibuki's job is to find the traitor hiding in the class. During a tumultuous school trip, each class member experiences defeat and swears to grow in the future. Now, Class 3-4 seeks guidance from their former "master." At the same time, the first semester final exams are approaching. On top of all that, Kuran Shuto, the Traitor, devises various schemes to get Ibuki to drop out of his bodyguard duties…?! A battle of wits breaks out over "failing" the final exams!!

Volume 4 of the Honeko Akabane's Bodyguards manga series by Masamitsu Nigatsu.