The modern world had become exposed to a new element which became unanimously known as "Mana" after a freak meteorite incident, creating people with superpowers and monsters that threaten life on Earth.

Perun, the "Progenitor" of the meta-humans retired as a war hero and created a Dark Guild, its members being the war orphans he had adopted throughout his career.

His peaceful life of filling paperwork begins to collapse as the nightmare of his "Awakening" becomes increasingly unbearable, forcing his once-powerful abilities to turn dormant. 

Unbeknownst to Perun, the problem children he had adopted since young, have grown up into girls with cheat-level abilities due to the properties of his mana; they became meta-humans far beyond the level of humanity, powers that contest a twisted love monopoly for their father. Should anyone bare their fangs (or romantic interest) towards their beloved one, their sweet facades shall break with no hesitation.

When their seemingly unaware Master is forced to return to the center stage again as a "Level 1" character like the rest of the world, his obsessive daughters shall move beneath the shadows to create his new legend.

This is the story of yanderes & obsessions.