Punching bag

I am amazed in the confidence of the author and publisher to produce this kind of story. My brain can only survived two illogical things and called it quits. How tf they are so confidence with trap came after weaponry. Never had I known any civilisation will forward to weaponry before knowing trapped. 2nd, the MC is an adult in child body, you know your step mother and sister is untrustworthy, why did you cultivate the high maintenance plant out in the open? This is beyond my brain can comprehen