I'd say just trust Kuro. The kid knows his stuff when it comes to hurting people because that's practically all he was trained to do since his childhood. It really has nothing to do with his sharingan seeing anything because it's inactive and will probably stay inactive unless Kuro needs it direly.

Just don't do what my character says in roleplay unless I specifically say 'do this Helios' in the OOC.

I hope that answers your question because I'm not entirely sure what else you could be asking me.