Thank you @RainbowCat you help me a lot actually
Don't worry if you didn't understand, it's my duty to make it clear as possible, it seems that some doubts are about situations that going to be solved later while other questions are really good and understandable.
I know this one was obvious and it was mentioned in a very few moments, but this means that I need to remind the readers about it just in case they lose track of what it means and don't want to go through a bunch of chapters back just for this. So, I'll keep it in mind.
that is a really good question, but it's not the kind of question I can answer with words,
the readers need to see how durable Subhams are compared to Humans so it's mostly something that will be shown under different circumstances.
That was the kind of subject I was wondering if it was clear enough, it seems that it needs more exploration about it, so I'm glad to know 
Well, thank you so much Rainbow Cat 
You were the first and only person who notified me and offer their help so I'll send you 1000 ink right now.
You really make me feel more relieved about the whole situation about the story 