All you need to start is a profile picture and a nick name.
You can mark other people's upload as "Kawaii!" "Just OK" "Kawaii NOT". Things you marked as "Kawaii!" will be automatically saved in your history. You can look through the collection anytime.
You can easily upload your Kawaii collection. Once uploaded, anyone can vote "Kawaii!" on your list. Getting anxious already?
You can see what's trending in Kawaii ranking based on everyone's vote. This list surely increases your taste level.