[Gaikotsu no Spare Rib (Kurohagane)] Omniscience, or perhaps inscience. (Blue Archive)

Himari Akeboshi, Millennium's super genius hacker, trades her monitors for chains as she surrenders body and soul to Sensei in a night of devoted masochistic worship. Whipped, spanked, collared and showered with degrading pet names, the delicate beauty begs for bruises and markings, her blissful ahegao betraying just how deep her obsession with her beloved runs. By the final page she lies cuffed and spread in a strappy bikini, declaring herself Sensei's eternal bride and exclusive fleshlight while pleading for baby-making sex till death do them part.