"Whoa, if looks could kill." (Playful, teasing attitude.)

"Tsukasa!"
"You keep your hands off of her!" (Say these lines as if you're extremely angry at the person you're talking to. Not screaming, but say it with a lot of ill-intent.)

"You and your occult obsession." (Slightly disappointed.)
"That's the kind of stuff you only read about in the tabloids. You never hear about it on the real news" (Serious.)