Honeko Akabane's Bodyguards 6

It's late at night after the closing ceremony for the first semester. The two major assassin organizations, The Hunting Dog Organization and The Salvation Funeral Garden, have joined forces to launch an attack on Honeko Akabane. Class 3-4 faces off against the powerful enemies that approach them, winning one victory after another. However, Moral of The Hunting Dog Organization kidnaps Kuran Shuto and escapes. Ibuki and his friends give chase, joined by their former enemies Masachika, Nanafuri, and Hyoka, who give them a boost. But it seems that Shuto and Moral know each other…? The final battle reaches its last stage, in which they must rescue their comrade from the mysterious enemy!!

Volume 6 of the Honeko Akabane's Bodyguards manga series by Masamitsu Nigatsu.