First 3 tiers in chronological order, 4th largely in chronological order, 5th one a little, 6th one chronological order between groups (and inside).
Ultimate bias : One of the first idol I heavily followed, and easily the idol I spent the most time listening/watching by an extreme margin.
GOAT bias : Basically current bias, Bonus point to Karina
Old Bias : Bias in the past that I slowely stopped following heavily
Bias Wreckers : Those idols you can't stop watching when you see them
Considered Biasing : After some thoughs, I finally decided to not bias them, sometimes in favor of another idol (Yuri-Sakura, Yeri-Irene)
Legit Bias option : I though about biasing but didn't think I was following them that much. Very eye catching though
