I had creampie sex with my brother-in-law without telling my husband...

Natsume, who lives with her husband and brother-in-law, secretly has feelings for her brother-in-law. Natsume's sexual desire has been building up, and one day, her drunk brother-in-law asks him to kiss him, they have sex without a condom, and he even allows him to cum inside her... She wakes up to a pleasure that her husband cannot experience, and repeats intense, intense creampie sex... From that day on, a strange double life begins...