The Girl in The All Boys School

Yuki was a normal girl. That is, until she had to move to an all boys school owned by her father. She's lucky that she had her two childhood best friends, Zero and Ichiru who, by the way are identical twins. What happens when transfer students come, and start crushing on Yuki, like all the rest of the entire school. Zero and Ichiru feel the need to protect her, but is it brotherly like they say, or are they in love with Yuki? And what's with the secret that everyone seems to be on except Yu