Studying Masters in water resources engineering in Japan(civil engineering)

Hey everyone! I will keep it short. I want to pursue my masters in water resources engineering in Japan. All the good professors in my college came from Kyoto University in Japan and they are great in their field. I also want to pursue masters in water resource because I am really interested in this field. So, I want to learn some details

1) Do I have to study in Japanese or is there option of English for masters? I have seen somewhere you can study in English for masters in Kyoto but not sure. Sure I have to learn Japanese language but I want the study part.

2) If I went to Japan to study, can I get a part time job in civil field? Yes, I depends on your capabilities but I want to properly pursue my study without much pressure of earning or living.

by Pale_Illustrator9803