Shuriken Arashi and Iron-Bound Books of Shuma-Gorath

[Gilead710]

When the effect of the attack "Shuriken Arashi" said "remove all allied Hand Ninjas from the battlefield", that's count as KO them? and then thats trigger the effect of Iron-Bound for return to my hand?

Thanks.

[Thoras]

It does not count as them being KO’d, no.