LOL the heck with the biased fans, Eri Umi is real because Sakurako Kimino -the real author- says so, she wrote the School Idol Diary of Eli, in which Eli only talks about Umi and how cute she is when she's being teased by her and both tease each other out of jealous. Plus Eli wondered if she was an S because she enjoyed so much to tease her. That also was part of the SIF, and all the PVs also show their closeness. Eli and Nozomi just appear to be close friends, how can you say it's real? c'mon, they just have a song together and that's it. Eli also has a song with Umi, and the author even added a little comic in which Umi got all melted over Eli's touch. So shut up your filthy mouths you haters.