Please recommend two school novels from around 2008 and 2009.

I found two school novels. It seemed to be about a female protagonist in 2008 or 2009 who was in poor health since she was a child. In order to save her, her parents made her a ghost's assistant to help them seduce the souls of the dying. The female protagonist would fulfill the last wish of the dead. There was a rich old man who hoped for family harmony. He had an adopted eldest grandson. His biological second grandson and granddaughter were very close. They lived together and studied in the same high school. In order to fulfill the old man's wish, the female protagonist transferred to their college. She started a love triangle with her grandfather's two grandchildren. The eldest grandson was adopted and was gentle like jade. The second grandson was domineering and cold, and he was in the same class as the female lead. He remembered that there was a scene where their college organized a camping trip. The female protagonist was originally paired with two other girls. Later, the two girls got food poisoning, and the female protagonist was assigned to the team of her second grandson, who was closer to her. The novel involves magic, fighting ghosts and whatnot Oh, oh, there seemed to be the third male lead. He was a little monster. He usually turned into a dog. It seemed that he was subdued by the female lead when they were camping. At that time, the female protagonist was entangled by its vines. It was the second grandson who cut off the vines to save the female protagonist. The eldest grandson was also there, but he asked the female protagonist to wait for him to find someone. Then, the second grandson took the opportunity to save the female protagonist. This old man's young girl heart instantly leaned towards the second grandson #(Fickle Heart) #(Fickle Heart) I'm begging for another school novel. The male and female leads met through a childhood friend. They both liked the little girl very much. The girl seemed to have died. After the male and female protagonists got together, they were once a couple that everyone in the academy envied. He remembered that a girl who liked the male protagonist locked the female protagonist on the rooftop (I think so) and was slapped by the male protagonist (I don't remember if she slapped him). Later, the girl transferred schools. (It seemed like she was the one who did something to the male and female leads after they separated for many years.) Later, the male protagonist found out that he had brain cancer and took medicine without telling the female protagonist. The female protagonist gradually realized that the male protagonist seemed to have died in a car accident. The female protagonist was very sad and cut the long hair that the male protagonist liked. She always wore black. The people in school said that she was cold and had mental problems. At this moment, the second male lead appeared. The second male lead was a problematic youth who shared the same table as the female lead. Once, the female lead had a stomachache and was carried from the classroom to the infirmary by the second male lead. Later on, the two of them seemed to have gotten together. When they were taking wedding photos, they met the male lead (I don't know if that's the case, I can't remember clearly).