Some context: This artist was popular for drawing a lot of "Hata-tan", which was the name for an emo/depressed version of Hatate
The author's storyline regarding these two is that Hatate looks up to/likes Aya, but the latter wont give her the time of day, and verbally berates her. There was also some stuff with Momiji? But I dont remember haha
I used to read their stuff a lot maany years back surprised this arrived here just now!