i feel there's an opening for an interesting story development here: a 20 yo that doesn't know what to do about their future is basically a lost cause and a complete loser by japanese standards. It would be interesting for her to realize that she really doesn't have a "dream job" or something she really wants to do, and starts feeling guilty over it. Her bro putting extra pressure on her (unwillingly, by trying to encourage her). Of course I don't think this will happen, tho.