Let Them Breathe is about a boy, 5, who goes to Seoul, South Korea on a mission to help cure conscious zombies and vaccinate survivors. To his surprise, he's not given a warm welcome especially when the Organization had made arrangements for him and his team to be there. Not only does he now have to confront the opposition but also the leader of this new Seoul, Golden Eye. 

Golden Eye taunts 5 and ridicules him about 5's past. Determined and unprovoked, 5 works to complete his mission, explore the city and lore of Seoul, and learn more about his past and who he is. 

What can players expect from this game? Let Them Breathe will have a gameplay system in which the player will have all of their powers given to them at the start. Instead of unlocking skills, players are encouraged to explore Seoul, South Korea and interact with the NPCs, the scenery, and the the music. By doing this, the players are immersing themselves into the game and slowly unraveling the story of 5. 

Gameplay of Let Them Breathe is fast pace, close combat, special moves, and cool downs. There is NO DIFFICULTY setting in Let Them Breathe. Players are expected to adapt to their enemies so as to overcome them and win. Enemies will range anywhere between zombies that can be taken out with a simple one strike attack to full on beast, and mystical entities that can only be won one or two ways.

Let Them Breathe features a semi open world where the character can explore various districts of Seoul, South Korea such as Samcheong-dong, Gangnam/Guryong Village, Gwangjin, and more. Players will be able to listen to original songs tailored for an authentic Korean culture; hence K-pop as well as original orchestrated scores, and most importantly, players will be able to learn and dive into ancient history and fantasy lore.