This is on a planet that is very similar to the earth. On this planet, there is a secret organization called the "Sorrow Alliance".
The "Sorrow Alliance" is composed of many talented people on this planet who do not trust any emotion in the world, especially love. Each of them has superpowers, and they live very crazy. Their mission is to play with other people's feelings, and they must work hard to collect the ten crystals of sorrow shed by that person after being heartbroken (that is difficult) To collect, each Crystal of Sorrow must be shed by ten tears of mourning from 10 different people, unless that person loves him very much and is even willing to give his life and sacrifice everything for him. As for why they need to be collected, there is a big secret...), So no matter how cruel others say them, they don't care! ! Because in their perception, ruthlessness is their biggest rule.
The "Sorrow Alliance" is mainly composed of seven members. The boss is the leader (however, he seems to be just a leader on the surface, and there seems to be a controller behind it...). Six of the members assist the leader to complete the collection. Our heroine is one of the seven members, the fourth oldest, and is called the Fourth Princess by people in the "Sorrow Alliance". She is beautiful (absolutely the most beautiful), ruthless, cold-hearted, possesses powerful powers, arrogant, changeable, likes to play with other people's feelings, and likes to see men's heartbroken expressions. However, there are still men who like to wait for her to look back at him. I heard that there are many handsome brothers in the "Sorrow Alliance" who have a silly crush on her.
That, I forgot to mention, this is a girl and a boy, the ending is undecided, but there are many handsome boys and beautiful boys, specializing in torturing handsome boys and beautiful boys, hehe