I don't talk about KH in front of people because 1) If they do know about it, they just say I am waiting for KH3. 2) I know too much about it. 3) No one cares.
It is not that popular where I am. I can say,"Black Butler." and have a better conversation. Call of Duty, don't say that. They'll give you their gamertag or invite you over for pizza and play. Hell, you might just have a sleepover.