MIRD-200 Uniform soaked with rain seeking shelter. Raped and creampied by my sister and ten of her friends during a rainy after-school

My sister came home soaking wet with a lot of friends in a sudden heavy rain. My sister's friends take shelter from the rain until the rain stops, but I can't stand the naughty appearance of the 10 sisters in transparent uniforms that get wet from the rain, and I get an erection. Then the older sisters who noticed my erection began to touch my cock without telling my sister. I'm so comfortable that I shoot, but the older sisters who saw the cock still erected further straddled me and lost their virginity.