Alright. this SHOULD be relatively easy to find, but for some reason I'm having the worst time trying to find this manga and I can't for the life of me remember the name of it. It's either a full colour 4-koma or long-strip yuri ( but I'm pretty sure it's a 4-koma ) set in high school, and most of the manga focuses when their relationship is already established. the girls look very alike, and I remember at some point their moms get together as well (?) It has a lot of chapters, if I remember correctly.