no it's notYa’ll being too harsh on the girls , they mostly just trying to survive and you havent seen them killing anyone yet…the ninja girl interrupting is a bitch move for sure but she just doesnt want to see her friend die in a weird place they all got drifted to.
They all just tryna survive , even MC isnt so merciful when dealing with people who hurt his friends.
just the fact they're with such bad merc company is enough. that's their 1st sins
do they have no brain?? they should be able to find better company rather than mingling with killers
saying they're just summoned or "new" in isekai doesnt make your brain rotten. being young is not an excuse either
they are literally stronger than the whole 100 mercs in the first place, that's no reason to stick to them. find a better merc group with better reputation!!! that's their 2nd sins, they dont find better reputable merc group