Like many others, I started with Kizuna Ai then onto the others like Kaguya Luna and Mirai Akari. I tried watching Virtual-san wa Miteiru but I couldn't get hooked because Kizuna Ai wasn't there. All I thought was "These plebs stealing Ai-chan's spotlight". Then I found Shizuka Rin, more specifically, JK Gumi through that. When I saw Mito, "Ain't that one of the chicks who were in Virtual-san wa Miteiru?" Again, I couldn't get interested still.
About two years later, I saw a video about Belmond Banderas. "Who is Belmond Banderas?" by Belmond Fansubs. I enjoyed it then watched other Belmond related videos. After that, I discovered Yashiro Kizuku (Happy 3rd Anniversary, SEEDs). A plain-looking avatar but he had a lot of personality, he was hilarious and charming. Then discovered the others through him, Dokuzuhonsha, 1st Gen. Seeds, and OTN.
It all came full circle when I saw Mito again. What can I say? Tsukino Mito really is an interesting virtual youtuber, the stunts she does and her interactions with viewers is amazing. From TL alone too, you can tell how much she's really good at talking. She gets you. There's a channel that clips and translates Tsukino Mito, check it out.
Tsukino Mito is my oshi. I'm a Mito shill, and that's the end of it. I really regret not falling sooner into the hole.