Mark looked shocked for a few seconds before his shock melted into a grin filled with mischief, and he grabbed Rika's shoulder teasingly.
"You will make me back away if I don't back down? Oh my! Now, I look forward to the tricks you will pull on me. Should I be scared?"
Rika's eye twitched to see her brother not taking this seriously, but she tried not to fault Mark for having a screw loose.
That did not mean Rika would let him get away with this.
"Stop messing with me and be serious. This is no laughing matter."
Rika jabbed Mark hard enough to make him clutch his stomach and kneel in pain. He looked shocked to see Rika's assault, and he tried to open his mouth to complain.
But their mother's look made Mark back down this time.
