Honeko Akabane's Bodyguards 2

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. Masachika Jingu, Akabane's older sister and the daughter (not son) of the head of the Jingu Gang, who now has a crush on Ibuki, launches an attack on Sosoji High School. While class 3-4 is stuck in class, Ibuki manages to endure the entire 50 minutes against her assassins on his own! When his fellow bodyguards finally arrive, it's time to settle the fateful battle with Masachika Jingu!!

Volume 2 of the Honeko Akabane's Bodyguards manga series by Masamitsu Nigatsu.