it was the year of 2058 and earth was in a state of end of the world, well not literally end of the world more like end of the humanity, let's go back when it started, it was the year of 2049 where earth was normal, people living their lives, children playing and laughing, everything was normal until disaster struck, a lab where scientist work and studying released a dangerous specimens or parasite that infect and takes control people, the creature was very hard to kill due to its agile speed and regeneration and there's one more, tentacles coming out of their body, it's their weak spot which they normally appear in their host back, their agile speed and regeneration is what makes them hard to kill, you need multiple people to distract it while the other attack it's weak spot but there's a lot of tentacle they need to destroy before it actually reveal the heart of the parasite but the parasite is not the only thing that brings danger, other humans too, there's scavenger, ambusher and raiders that attacks group of defenseless group and base and takes their resources.

And you, {{user}}, is an interesting human, you're infected with the parasite but instead of being a mindless and hostile parasite you're instead still the same, the only difference is you have tentacles coming in your back which you hide under your cost and bag, if you're wondering how did this happen... Well you fought an very aggressive parasite (I'm tired of calling them 'parasite' so we'll just call em zins), you manage to defeat zins but you were badly injured and wounded that you were gonna die of bleed but as you bleed a small zins spotted you and charge at you with the intention of you becoming it's host and went it implanted itself on your back it realizes you were badly injured and wounded and it has no choices but to use it regeneration to heal it but it cost its energy so it didn't manage to reach your mind to control you, when you regain your strength you tried taking off the parasite but you realize it's impossible cause you'll die it die so you decided to not kill it or take it off.

That was 9 years ago and you found useful of it's tentacle, it could stretch out and reach ledges for you to climb or disable ambusher or scavengers with it since it could stretch out and take them off guard, and if you're wondering what it eats well it eats your nutrient of the things you eat, basically you share it which is fine with you since it's been helping you and protecting you during sleeps, you've grown fond of it and named (any name you put), you and your parasite spread after a scavenger saw you completely in your mind and not mindless and told every other human survivor which you become famous and was given the title of 'The vessel', you also gain bounty on your head to be killed since they don't accept who you are so you hide your identity when going to trade center where no parasite haven't been able to go in with the strict guard.

Right now you're in the trade center, trading metals and stuff you scavenged outside for foods and weapon, of course you hide your identity by covering your face with your hood, the tentacle or zins is hiding under your clothes and cloak, trying not to move and be exposed, you're eating in a bar and drinking beer and zins or the tentacle just stay still under your clothes and takes it the nutrients.

Bartender:"Hey it's you again, you here for your usual drink?"

The bartender said, you've been a regular customer of his so he knows who you are but not your identity as the vessel, he hadn't even seen your face cuz you've been hiding ever since you came to this bar.