
This story is getting darker and darker with each chapter. Only after over 150 chapters we're getting to know these characters, just to learn how cruel the world was with them...

It's a really interesting way to go about it. Most author seem pretty eager to show backstory's of main characters, but Toboso does the opposite where we get to know the characters first in a completely different way. I think the circus arc was still my favourite because the reveal had me leaving like 'damn'.
So many people are tagging it as BDSM although it is not. It's bondage, but there is no sado-maso.
BDSM is for Bondage/Discipline, Dom/Sub, Sado/Maso