In modern Japan there are seven "Kings" who share power with their fellow clansmen. The Blue King Reishi Munakata, the leader of the Blue Clan "Scepter 4," held great responsibilities on his back. The tower that Gold King Daikaku Kokujōji supervised called the "Dresden Slate" was still on his mind, and he felt a great burden by killing the previous Red King, Mikoto Suoh. On the other hand, the former Red Clan "HOMRA" clansman Anna Kushina experienced the attacks from the Green Clan "Jungle" and awakened as the next Red King. By doing this, she bound her comrades through a strong bond once again. Finally, White Clan members Neko and Kuroh believe that the White King Yashiro is still alive, and seek his whereabouts. However, it was not just them searching for the White King. With "Jungle" once again jumping back into action, the fates of the various Kings are brought together.
from ANN

In the world of Horikoshi Kouhei's Boku no Hero Academia, nearly everyone in the world has powers known as "Quirks". Normally, citizens cannot use their Quirks out in the open—doing so is a privilege reserved by law only for registered superheroes.

However, a stubborn few have chosen to reject this rule. They are known as vigilantes: people with the hearts of heroes, but the reputation of villains.

19-year-old Kouichi Haimawari always dreamed of being a hero, but didn't think he had a good enough Quirk. Instead, he would spend his free time sliding around town doing simple good deeds, like picking up litter or helping lost children find their parents. Content with his lot in life, Kouichi never expected to be thrown into the world of heroes, but his life is changed forever by an unexpected run-in with Knuckle Duster, a vigilante, an illegal hero.

It is the start of the 20th century and the Parisian commoners celebrating the Belle Époque are fascinated by the antics of the resident phantom thief Arsène Lupin. But the mask of Lupin actually belies a beautiful woman...? An epic adventure aboard a luxury liner and involving even Detective Holmes is about to unfold!

The story takes place in a world where seven people with unusual powers are crowned as "kings," and revolves around the "bonds" and "fate" between the people involved.