Responses
Sounds like this one but I could be wrong
http://www.mangago.zone/read-manga/koushaku_reijou_no_tashinami/
Waaaaahhhhh yes this one
Thankyouuuu so much for your help
You're welcome, glad I can help you :D
Im trying to find story isekai about engaged prince and princess villains (duke daugther maybe) got cancelled, the prince cancel it in school(?) The villains angry and do something bad to prince woman(?) And villains lil brother also in the same school with his sister but his in prince side and also bullied her sister, so the princess get punishment something like banish so the princess father give her daughter task to trying build something like city maybe,,,,and in that city the villains get help from another prince also empress dowager ..... im not really good in english