Oh I forgot to write the time, its for 1 month.
Yes the borrowed btc will be returned as is, for example if I get 0.1 or whatever at 5% the return is 0.105 and I get the cash back I deposited.
About the other questions, at the local site there is only 1 person, and not in taipei. Also from this person you buy, I want to lend for collateral. I dont want to be dependant on the btc price as I will get my "investement" what I need the btc for in btc as well. So whatever happens I will have more than the borrowed 0.1 btc and be able to back in full, no matter what the btc price is.
It will not be a good decision to take loan from a person and then give loan to another one. There might have happened anything. And I guess you wont be able to take such a loan from anyone. If you still get loan then lender will ask you 120% collateral. If btc price increase then lender will ask more collateral if you cant give more collateral then the lender will considered you bought the btc by the collateral. So, you will be a loser.