So I Read This Thing Online 4...: Loathed and Betrothed.

Instructor Robin Feather is undergoing brutal electroshock therapy to "e;rehabilitate"e; her mind after a traumatic infiltration, but the corridors of Marionette Academy are far from secure. While Lady Conniver and Iron Dame dismiss the recent chaos as a series of manageable irregularities, a shadow from Uchida Jurobei's past is moving to dismantle his new life piece by piece.Lord Melchior Zegrath, a ruthless vampire noble, has arrived in String City to reclaim his "e;betrothed"e;, Lavinia Maxius, and he isn't coming alone. Guided by the twisted, chaotic expertise of the rogue S.E.A.S. agent Gabe, Melchior's subordinates (the incompetent yet lethal Bearhand and Voidroar) infiltrate the campus with a singular, bloody objective... execute Uchida and drag Lavinia back to the vampire domains.