I too want my readers to feel this way about my characters as, personally, there's a connection there I'd say
OC to creator, it's like sending off your child to school and hoping he/she makes friends ^^ Then again, I do like to see people suffer when they see their favorite characters die or something, something I got from the Danganronpa community I guess ^^"
I recently got a simillar feeling when someone commented on the well being of a character of mine who was placed in a comedically possible danger xD It's so surreal when someone points out a detail that actually was placed there for the intended effect 
Lastly, is it cool to just outright ask readers this? :U