Hi, the game is SFW, there are no explicit adult material!
The story has a route where they are fighting against violent infected, so there are parts where the characters appears with blood stains on their cloths. As the game description says, in this route you will help injuried soldiers in a hospital and collect samples from the infected, so there will be mentions of blood and wounds. It's not heavy or gore, this game is about how you will choose to act in face of difficult situations. If you will give up right away or choose to help the people and try to solve the problems.