King Slayer
This source reports a placement cut and contributes to the top-cut meta model.
Reported placements
🥇 1st kingggace
🥈 2nd Atossan
Phoenix Wing+ 
3-60+ 
O Phoenix Wing 3-60O 
Golem Rock+ 
9-60+ 
P Golem Rock 9-60P 
Knight Mail+ 
9-70+ 
R Knight Mail 9-70R Phoenix Wing+ 
1-60+ 
LR Phoenix Wing 1-60LR 
Cobalt Dragoon+ 
7-60+ 
L Cobalt Dragoon 7-60L 
Whale Wave+ 3-60+ 
LF Whale Wave 3-60LF Cobalt Dragoon+ 9-60+ 
E Cobalt Dragoon 9-60E Knight Mail+ 1-60+ 
H Knight Mail 1-60H 
Aero Pegasus+ 3-60+ R Aero Pegasus 3-60R