@Damoon It's your call if you wanna drop or not, I don't really care, but you're on drugs if you think there's been 0 progress. Even if you exclude everyone except Jun and Tomo there have still been a number of subtle changes to their mindsets and relationship.
I've never read a manga or comic, where each and every character is as likable and unique as in this one. Even though it is just a 4-koma it gets its character development more together than many other manga.