"Mark feels bare with nothing but his shaft held tightly in his hand." Jackson reads. "He aligns against the hole and slowly pushes in. With the rod 40mm thick and a mere 0.3mm gap between the shaft and the walls of the hole, it is a tight fit."

Jackson continues to scroll down the page, eyes trailing the neat, black sentences against white, feeling his face grow increasingly hot with each passing minute. He tugs at his collar before he continues.

"Frction is not a problem; the shaft shines slick with lubricant as Mark inches his way into the hole at constant speed." Jackson turns red and his grip on the edges of his laptop tighten till his knuckles turn white. "This is too hard!"

"Okay, I seriously can't do this," Jackson declares, throwing his hands up in defeat. He stomps out of his room and heads to the leader's. "Hyung!" He flings the door open and stands at the doorway, hands akimbo. "I need help with my Hydraulics homework assignment. I don't know how to calculate the force required to pull the aluminium rod through the bearing."