Kiss Me Kill Me is an otome game where you control a female assassin named Royce. You play as the mysterious girl Royce, a contract-killing assassin, who is forced to work together with the mob boss Leon and the socialite Royce, and also has to deal with her feelings for the assassin Leon.

You are a female assassin who is part of a mob boss's armed team. You have to work as a team to complete your missions, which include assassinating mob bosses and royalty, and also protecting the mob boss from the law. You have to complete these missions as quickly as possible, because your boss is a very powerful mob boss, and if he is killed, you and your team will be hunted down and killed as well.

As you play the game, you will have to complete missions, which will give you experience and power, so that you will be able to complete your missions more quickly and easily.

Your character is the main character of the story. You will have to make decisions as you play the game, which will determine your fate.