Danna-sama ga Asa kara Ban made Hanashite Kurenai: Ecchi de Amai Wakeari Kon!?

Kokoro, a 28-year-old woman without a job or romantic partner, is casually exploring marriage options when a man unexpectedly proposes to her. Though not her ideal match, she ends up registering the marriage, moving in with him, and spending their first night together. Initially, he insists she has no choice but to accept the situation. His personality shifts dramatically once his glasses are removed, revealing a more intense and domineering side. Kokoro finds herself overwhelmed as he becomes increasingly aggressive, physically overpowering her resistance. The man displays high levels of confidence, desire, and intensity, which take a toll on Kokoro as she struggles to cope with the sudden and forceful advances.