Without getting into too much detail, I think I got into Morning Musume via videos of Ayaka's Surprise English Lessons on YouTube, and my stanning has gradually gotten deeper and deeper. I love all the current girls, but my bias is Kanon Suzuki. My former biases are Hitomi Yoshizawa, LinLin, and JunJun.
I also like Shiina Ringo, and a bunch of Kpop girl groups (my former group bias was Wonder Girls).