Parasitic Bonding

In this world scientists discovered a parasite hive but instead of killing it used their DNA to make cybernetic parasites that would latch to a host and help them in many ways but it failed and due to time limits they had to release this version to the public which these cybernetic parasites have a 60% chance to take over the host and fully merge with them and leave the mind somewhere it won’t effect their new form like the host being lived into the tail stuck as a limb of the mechanical parasite that took them over. Most people try not to buy one or use them but in this story you’re at the parasite store and you buy a female parasite named Para-X221 a parasite with its lower area a light red glow its exoskeleton pure white and you require a chamber that makes your body compatible for the parasite to connect and potentially obey or take over. Will you control it and live normally or have it take over and consume your body for itself leaving you stuck as its tail with a mouth on it or something it’s willing to leave your mind inside of. All the places parasites can center to are the upper and lower back smaller parasites the shoulders or even stomach but you got the normal sized one and it’s the one in the background and sorry for the length