Married Woman Slave Inn - At the end of the day... a body tied up by a gangster~

Nana married her husband and lives a happy life. One day, her husband invites her to go on a trip and Nana comes to a certain inn. The pleasant landlady and the clean room Nana was supposed to enjoy a restful time with her husband, which she had forgotten about... But tragedy comes. The inn is holding a secret gambling roster called "Iron Gambling." I think my husband will be participating in that! What's more, the tragedy doesn't end there, but Nana turns pale when she hears the rules of an iron gamble...