The Mc got a mini bus (was it?), he goes around adeventuring, along his adventures, he met different kinds of women, and killed people that crossed his path.
The Mc killed a mutated animal while traversing the country side at the earlier chapters, he got to upgrade his Mini bus because of it, but in exchange, his vehicle got rekt like crazy. The beast that he killed is pretty big, soooo~ the Mc looked for another vehicle that would be able to store his loot, he found another, stored his things, and pulled it using the mini bus. After that, he went to find his sister, but to his surprise, his sister became a leader of a small group, and his sister also got an ability. If I am not mistaken his sister's ability is something like electricity( lightning?). He met the group of his sister but they disdained him because he didn't have any special abilities( they didn't know at first that he got the system thingy).
His sister needed mutant beast meat to exchange for a speacially made weapon sold by a nearby military outpost, so he gave the mutant meat to his sister ( his sister's group was surprised because of this). In exchange for the meat, his sister gave him mutant beast cores that he used to upgrade his vehicle. After the transaction with the military, they somehow decided to go to a black market to exchange stuff. He met a girl slave in the black market that later became a companion. After the black market thing, the author just forgot that the Mc's sister left a group of people without any power to defend themselves back in their base. The author decided for the Mc to instead make the Mc go and find the huge miner truck that the girl slave told him. Ohh, the mc also got a lot of beast cores because they rekt the market in a fight, and also took all of the wepon that they had sold before the fight with the leader of the black market; because of the beast cores, the Mc got to upgrade his vehicle again.
After a long travel, they finally got into the location of the mining truck that the Mc wanted ( he needed it to upgrade his vehicle, along the way of his upgrades, the system let him have another cheat, which is having a second form of his vehicle). The location of the gigantic truck is in a export pier. While in the pier, they encountered a gigantic sea beast, the beast looked like a krake. Even though their was some initial problems, the mc was able to scan the miner truck that he needed.