Half-sole still means half your foot is touching all that listed above. ;p
(also, please don't take my man card but I did ballet and actual ballet shoes are just like... foot bags... they conform to your foot... not great if you legitimately need arch support but otherwise not really any different than going barefoot)
Since you are a dude, just get some of these
. Cheap, full-foot protection, should work find with costume.
I'm not familiar with the show, so I was thinking "Toph" and assumed "girl".