What. The. Fuck.
Initially I thought this would be a cool story about the MC's carefree adventure, but it turned into 5th grade isekai garbage, the MC's persona sucks to begin with, like somebody once said "I'm not asking for a hero, but at least a human", this motherfucker has one of the worst mindsets.
'The-useless-character-that-wants-to-be-strong-but-never-does-and-never-will' cliche is just disgusting, can't her "father" at least teach her how to hold a fucking sword? If she actually trained then there'd be some characterisation, what kind of idiot wants to enter the middle of the battlefield when they can even protect their own skin? If it wasn't plot armour she would've died several times, like, bruh.
And then it's all solved through the power of friendship... Sigh Give me a break, there's no way a BERSERKER will recover their senses because SOMEONE talked them out of it, they are called "currently in berserk state" FOR A DAMN REASON. At least use Pokemon tactics and beat the shit out of her, when she's exhausted THEN it would make sense her senses would recover since it's like a computer formatting, ya know? Shitty-ass-ending...