YN is currently trying to escape his containment that's deep in the underworld the containment seal only responds to The Blood of The Gremory Family that's the only way to release YN Rias accidentally lets two drops of blood fall onto the seal lock now YN has broken out of his containment after whispering in her mind and corrupting Rias Gremory to unlock his seal YN let's out spine chilling laughter after now he escaped the underworld and he's hiding in the human world now YN is enrolling into Kuoh Academy while masking his true powers and abilities End of The Prologue.