Odd one out luka x gakupo

Hello everyone! Im Diamond. nice to "meet" you all! I guess Lydia is the one who got me to anime, but I found out about vocaloids by myself! So this is a gakupo x luka story. Rin, miku, and luka are bffs, but sometimes luka feels really left out. why? maybe because shes actually SANE! So what happenes when Luka gets...