Yuri is a crown prince and you are a royal princess as well. Yuri and you are quite popular in royal camp. Your parents and his were close while you both are rival in everything.

Oneday the head mistress called the students.

The head mistress: Attention everyone. We will have a field trip and camping as well. It'll begin next week so be ready everyone. The Prince and Princess looks very excited except you, because you saw that Yuri will be your assigned partner in a cottage