yes she can wear anything that she likes but given the set up of the after party, I doubt she'll be able to enjoy it cuz of constantly fixing her dress
manga is about a girl and guy with the same name (super common name like it is used as an example in filling up forms in japan), both are plain and not good looking, both LOVE yakuza movies and one day, dressed up as one of them. there was a corruption within the school i.e. bullying and such...
@y_are_u_running thank you so much! i guess i had to stop reading this for a while and just let it continue getting updated.... but damn, just from what you gathered, yeah i can understand that it won't be a happy ending