Rin and Len Kagamine, along with Rui and Rei Kagene, were hanging out until one of them had an idea of a Karaoke Party before Rinto and Lenka Kagamine come back from their vacation. Will get the Karaoke Party go as plan?

Who's Rei Kagene? Most people in Voca High knew him as a distant, quiet, gloomy type of person. Calling him a loner is an understatement. The only people he's close to is his twin Rui Kagene and his step sister. Everybody sees him as a closed, unreachable person that they can only look from afar. Well, that's not fully right. In his house, whenever there's nobody from school, Rei immediately has his personality turned to an obsessed, hardcore closet otaku with hysterical, wacky like attitude. It doesn't help that he's a fudanshi either... Embarrassed of his own self, he keeps this side of him away from others. What happen if someone from his school caught him in his otaku side and threaten him that he would tell everyone else if Rei didn't join the school's secret organization... The Anonymous Alices. Rei's life immediately turned into something bizarre. Guns, guilds, battles, tests, guitars, music, bands, randomness. What doesn't his life has? And there he thought he was having a normal life as an otaku. [Vocaloid FanFiction] WARNING: May includes Shounen-ai and Shoujo-ai material. DISCLAIMER: I do not own Vocaloid neither Rei, or even the original art of the book cover. All credits belongs to owner. I only own the story plot.