My assumption was that she was a foster sister or a distant relative that needed a guardian since she was a minor…
It’s clearly stated she’s a half sister although not clearly stated whether it’s dad or mom they share but my guess is the dad based on mom’s interaction with the sister
Tbh is season 1 Uehara annoyed me more but in the second one I was more annoyed with FL because why do you actually keep doing this to yourself 🤦♀️And then how she constantly was so insecure of his every interaction idek how I managed to finish it i don’t understand why she viewed Uehara as this God-like being apart from being more book smart than her I don’t see anything else he does better than her she was more emotionally intelligent she’s just as pretty as he is handsome and tbh in my opinion she’s prettier than him so WHAt is it than made her feel Sooooooo beneath him 🙄
Lmaoooo in season 1 I was rooting and praying that she would open her eyes and go with Daichi or at the very least I liked itchan too😭😭😭😭but NOoooo my girl can only see Uehara who said he liked her but treated her like shit You know how people say the heart wants what it wants….yea that shit is scary and seeing dramas like these just makes me pray I’m never that blind to BLESSINGS like Daichi and itchan like those 2 were so good and would’ve been so good to her but she had to choose the struggle life
If uehara san said he didn’t believe people can be friends with the opposite gender I wouldn’t even argue because look at the poor guy’s life from season 1 every guy around them has somehow fell for Nao…except for the friend for Mitchan but then again he also fell for his friend Marina 🤦♀️
1 
You know how people say the heart wants what it wants….yea that shit is scary and seeing dramas like these just makes me pray I’m never that blind to BLESSINGS like Daichi and itchan like those 2 were so good and would’ve been so good to her but she had to choose the struggle life