Originally Posted by a7x4lyf3
I believe that is only visuals that you see an enemy doing, like sometimes when you dodge at the very last second before an attack hits you there's a blue outline behind your character, I think in multiplayer instead of you seeing other players do that it's the smoke teleport instead.
I had opponents "smoke teleporting" away right in the middle of my izuna drops, so I'm not sure. OTOH, the netcode is so awful, anything can and will happen.
EDIT: about hara kiri: unlocked for me at lvl26. In order to perform it "successfully", I had to repel a SOB finisher first, then the "press B to kill yourself" prompt appeared.