Rikkyo University Law Exchange programme?

Hello, I’m so sorry if this is stupid.

But I’ve got the opportunity to study Law abroad at Rikkyo University for between a semester and a year.

As a second year student in the UK, my question is,

What will I learn?

Will they presume I’m a first year student?

I can’t find a prospectus anywhere that isn’t about the four year exchange programme. I was wondering if anyone else had done this and could tell me what they did?

Thank you!