hey guys i'm in need of shoujo or josei mangas with
parental favoritism as a theme.

one child is given preference over their siblings or two or more children is given preference over their sibling.

remember i was reading one or two of these when i didn't know of mangaupdates so i can't think of the names of those.

sweet bitter love by HAN Yu-Rang....at least so far it is.

mmm well in papillon- hana to chou there is some apparent parent favoritism

Idol Shopping
Is what you search.

Kodomo no Omocha
Fruits Basket (I think, it's been a long time since I read it)
Global Garden

Seinen, but Monster is brilliant.

awsome, i'll look em up! if you have more suggestions keep posting plz.

Life, from what I can remember off the top of my head.

________________
Go to work, send your kids to school;
Follow fashion, act normal;
Walk on the pavement, watch T.V.;
Save for retirement, obey the law.
Repeat after me: I am free.