MYSTERY OF THE PURPLE YAM TARTS

The twins attended class, as usual, the week following the field trip. If before the school event they were almost invisible, now, in every turn, they bumped into curious gazes of their schoolmates their age, and even the ones from older batches.

News surely traveled fast.

The twins' secret identity of coming from such a prominent family background did not go past the student body's attention. As they sauntered along the school's lobby towards the building's premises, whispered buzzed all around them. 

"Have you heard?"

"Yeah. It turns out that the twins from first grade were the son and daughter of a well-known business tycoon. They're rich kids!"

"Oh, it's them, right?"

"Yeah, it's them."

Of course, not all must have been about them, but the conscious gazes of some who couldn't keep their curiosity mummed gave out those who were guilty talking about them.