Yes, MC is normal human, but also he have money. Not a lot, but at least something. I realy do not undarstand why he cant do a minimum. At least making his hotel more safe place is something he Can do. He can buy more security sistems (and event with Sylvia in the garden showed very good that this a time to make some upgrades) and one or two security androids. If this is not alowed for a hotel owner to buy some androids for protection purposes... then ok, there always an option to try to find something like this on black market (MC already broke many laws... it will be just another one). He could offer more help to Nia, not just 200$ on some "consumables". At this point of game on my not moded safe I already have some hundred thousands of money. Spending at least 4-5 thousands could be good to make sure that she is equiped properly. Also I dont undarstand why he turned his back on Jia asking for help. Ofcourse, to kill someone is not an option, he is just a normal guy. But he could at least try to do something, not leaving everything on someone else (yeah, Nia in the shadows... she cant do everything on her own). There is a lot more things that just a normal hotel manager could do. Yes, he is supporting character, but why he cant at least support properly?...
Im not speaking about "being a hero". No one is a "super hero". But there is always something that normal guy like our MC could do. I dont ask to make him overthrow all corrupted politicians on his own or changing the system completely. Im talking about normal actions. He is not just owner of big cock, he is a man who took responsibility about many girls with theyr problems. So some actions would be great to follow his responsibility.