Prologue

Hikaru Harmony is just another clone (sister) of the Goddess or Primodial Solar. She need to beat Muzan so she can meet her soul mate.

Boboiboy just defeated Retak'ka when suddenly he transport into a world full of heroes.

In the first season there will be on KNY x BNHA x Boboiboy, but in the second one there will be a lot of crossovers.