Thank you for translating.
so a couple things, am i the only one who finds it "odd" that FMC is the only one other then MC who can hold the demon sword, like it zapped someone else who tried to pick it up before right? (or am i just thinking of some other manga)
as for Marla, she probably has some fucked up fetish and that's why she wants MC to give up on her, or she thinks its fucked up but its 100% normal thing.