To put it simply, two girls with normal sexual orientation started living together in junior high school and gradually became GL...
That's basically it, I'm not sure how I will write it...
There are two SD dolls that I think are very beautiful, maybe these are the two in this article. Kong Yao is on the left, attacking; Mo Zhun (don't be deceived by the name, this girl is actually long, not neutral like the name) is on the right, receiving.