Since not much information is given, it's hard to say for sure. But it could be the kid obviously, and perhaps the kid's parents or caregivers who might be involved in the events leading to the tragedy.
One possible reason could be a lack of oxygen. If something blocked the child's airway, like choking on a small object, it would lead to oxygen deprivation, making the kid turn blue and eventually die.
There were a few novels about his girlfriend turning into a zombie after she died that he could recommend. One of them was " The Zombie King of the City." The male protagonist was a humble student who was killed by his girlfriend and turned into a zombie. He rose to become the Zombie King of the City and embarked on his path of revenge. The other book was " Zombie Girlfriend ". The protagonist had unfortunately let his girlfriend eat an immortal pill and become a zombie in the process of saving his girlfriend. Later, he even met the Banshee King who had lost her memory in the demon world. Both novels were full of suspense and mystery.
In some Christmas stories, the death of a kid might be used to represent the harsh realities that can exist even during the festive season. It could be a way to show the contrast between the joy and hope typically associated with Christmas and the darker aspects of life.
There are two central characters in the 'the kid and the lion kid story'. One is simply a kid, who could be a human child or perhaps a young goat (as 'kid' can have different meanings). The other is the lion kid, which is a young lion. Their relationship and the events that occur between them form the core of the story.
I'm not sure exactly as I don't know the specific 'Love Never Dies Story' in detail, but usually there would be characters whose love is the focus, perhaps a couple or people deeply connected by love.
John is one of the main characters, of course. And then there's his pal. They are the ones who are in the middle of all the madness in this story. They interact with all kinds of strange entities and their actions drive the plot forward.
The Journey of a Knight Begins from the Lion Beast, by a Deep Space Knight. The male protagonist, Rael Chao Gurangi, was 33333 years old and single. After being sealed for many years, he woke up in the modern world. He had the power of a lion beast and was super cool. "Rebirth Seven Seven: From Married Girl to Returning to the City" was also not bad, written by Sky Blue Dust. The story of Leng Ningshan and Li Mingchuan's fake marriage turned into reality after they returned to the city was very interesting. From Hogwarts to Lightning, by Henning in 1988. The male protagonist, Andoine Wilson, was super powerful. The story started when Voldemort was still around. The protagonist did not play by the rules and had many new spells. It was written in black and white iron. Shi Shaojian had transmigrated into the villain's son and was cultivating in a wonderful world. The plot was interesting. There is also "Empress, do not panic, Your Majesty said that I am capable", Qingshui Fu Changmeng's work. Yun Qing transmigrated from the Xianxia game and became a fake eunuch. The story was super funny. "Black Tiger Blue Rabbit's Lord Mo Li" is also a wonderful novel. Everyone is welcome to click to read it!
There are many characters in Blue Archive Story. Some of the main ones are the student council members. They play important roles in maintaining order and leading the students in different situations. For example, there is a character who is very good at strategizing and often comes up with plans to deal with the various challenges the school faces.
Since I don't know the exact 'blue christmas story', it's hard to say. But it could be a lonely person as the main character.
If the story is about the painting, the main character would be the blue - boy himself. He is the central figure in the painting and presumably the focus of any story related to it.