Although they were under the impression that they had put on a good act, Isaac still saw right through them.

“ Isaac asked bluntly.

Fidelia's sudden arrival was just too big of a coincidence. Because of this, the gears in his brain started turning. It didn't take long before he figured it all out.

“Isaac, what're you talking about?" Robin laughed nervously, still wanting to cover it up.

“Grandpa, do you think I'm stupid?" Isaac asked coldly.