Info on Osaka University G30 human sciences

Hello! I am an American high school student interested in Osaka University's Human Science G30 program. I have had difficulty finding information about the program, so I have a few questions for any current or former students.
1. What academic credentials do I need to have in order to be considered for this program?
2. What is this the classroom environment like? How are the relations amongst the students and teachers? Are the classes challenging?
3. How are the living arrangements?
4. What is the overall student environment like? How are relations within the program? How are relations with the rest of the student population?
Thank you so much to anybody who takes the time to answer these questions. I will be greatly indebted to you!

Probably no-one here is a part of that program. You would be best to contact the program directly.

I can contact the administration, but I'm unsure of how to contact students in the program.

Ask the administrators if they can put you in contact with a current student. They should be willing to do it.

I will do that, thank you very much!