At last it works! thank you so much!
so, the problem is those line in clientinfo.xml.. I delete it and it works..
I copied that from https://rathena.org/wiki/Clientinfo.xml
I diff it using data folder first and multiple GRFs..
Yup.. Now I have to make this server online to my friends in hamachi.. :3
Anyway, Thanks again! +1`
edit: Some of the text, item name and description are still in korean (I changed to KRO) how do I change it?