Haraguro Onzoushi wa Tsuma wo Asera shite Nakasetai – Keiyaku Kekkon wa Amai Wana

"It's okay to do as I please, right, dear wife?" With his hot fingertips and sticky tongue… he teases my weak spots sweetly as I come again and again… This man whose thoughts I can't read turns into a "mean husband" only when he wants to tantalize me… "Please marry me." Fumika Momichi, who was leading a peaceful life working as the manager of a store, receives visit from a man who proposes to her with a bouquet of flowers in his hands. She soon finds out that her suitor is Masamune Isokawa, the heir of a large corporation. Confused by the marriage proposal of a childhood friend she doesn't remember, Fumika ends up having no choice other than marrying him after a certain event…!? Masamune's always smiling, elusive, and it's hard to understand his feelings. He tells her that getting married is one of the conditions for becoming the successor of his family. Despite that, he shows glimpses of attachment and twisted affection toward Fumika… How is her life going to be when she'll be at his mercy day and night!?