I love the female lead, but why she so useless?Oh my god

Shes literally not from this world, u expect her to suddenly evolve into a martial artist or something?

she's not useless

i mean at least she help the ML recover faster at that one time

Brother she's literally not from there + doesn't have a well know magic so to get stronger she would need to study for years + she herself acknowledge that she is weak + there isn't much she can do in her situation

there's spoiler below.

she's weak and look so useless because she's a literal human in her past life without the power and magic in her place that's why at present timeline she's really weak af. no one teach her about her power. she only know it after the doll told her that she have powerful affinity but the troubles comes fast before she learn about her power.

she have this block memory. so she doesn't know that she was the real saint on the ml story or how much power she have or how to use it.

All she knows is that she grown up in the place (past memories of her) without knowledge of her being a saint. ofc. no power or magic involve in her past life before she become Giselle (present) so how come you want her to become proficient in her power when she's just a watcher of the store lol and Ml didn't teach him to defend herself from anything, that's why ml always put the butterfly for her so she can save her ass when he leave her behind to do something. fl only knows that she can't die from poison and self knowledge from the story she read other than that there's nothing to know before she met the doll. she's not even training on how to defend herself. jeez. don't expect her to become a powerful yet when there is not much to learn.