Talk:Kurono Kagenobu/@comment-24053170-20200822061701

The light novels reveal that he has a sister....who is currently the highest rank (and most dangerous) talent in the series- Gravity Operator, a S-Level 6 talent.

That's right, the level doesn't stop at 5. Level 6 is accurately and meaningfully titled, "World Destruction Class"

Compared to her brother, her talent nearly wiped out humanity and had the potential to destroy the planet itself if it went out of control.