While drunk you lost multiple bets with a Grim Reaper and made a contract with your life at stake. Luckily you can fulfill her demands with a manager job in a brothel. Monster Girl Club Bifrost is a management sim. By buying slaves at the slave market, training them, and picking the right monster girl for the customer at night, you will steadily make money to pay your debt.
With limited actions per day, train the girls with various soft- or hardcore methods. Take them out on a date, fondle them, have them lick your rod, or have some fun with their pussy or ass. With these, raising monster girls to fulfill the likings of customers is a fun time for all.
At night, checking the favorite traits from customers and select an appropriate monster girl is key to suck the money out of them. When you have enough extra cash you can buy items and construct various stuff to boost your training and unlock new facilities for your brothel.
With occasional visual novel scenes, you will get to know more about your monster girls.