What is the meaning behind the picture that Kian84 gave to BTS' JIN? ... ”Neutral human”

The drawing that cartoonist and broadcaster Kian84 gave as a gift to JIN of the group BTS is a hot topic.
On the 21st, JIN posted on his SNS, "Thank you, President Kian84, for the gift."
The two recently met on the Netflix variety show "Kian's Unconventional Guest House."
In the painting, a man and a woman are wearing neck collars like animals that have been neutered.
In addition to the cubic expression, the use of purple, which is a symbol of "BTS" and its fandom ARMY, attracted attention.
This painting is called "The Last Couple," and Kian84 introduced this type of "companion series" at an exhibition last April.
At the time, he said, "It depicts what I feel when I see young people, both men and women," and added, "When I was in my 20s,
They had a wildness about them. It seems like that wildness has disappeared recently. However, they are also very socially conscious. "Looking at young people today, that's the impression I got personally. They don't marry, they have children.
"It's not that this is a problem," Kian84 emphasized, "it's not that this is a problem and we have to fix it.
However, when I look at society the way I look at landscape paintings, I find it interesting that we live in an age where people don't fall in love or get married.
Regarding the "last couple," he said, "Although a man and a woman are embracing each other, there is a law of species preservation in our ancestors' generations.
"By mating, better genes come out from generation to generation, and that's how we are today," he said. "Those people are the end of that generation. It's about not marrying and not having children."
It was pointed out and noticed.