People with unusual grades

Brendan decided to look for students whose behavior had changed since that day, a little over a week ago. Students with unexplained absences, or whose grades had gone up drastically. It took a while to get all the information he needed, and he spent the rest of his "free time" wisely. On the days Cici had class with him, he would stop time and grope her. On the days that he didn't, he would experiment. He found that he could control what exactly froze when he stopped time, to a small extent. He froze time right when he came, and found that he could either let his cum shoot out normally, or collect into a little bubble at the end of his penis, which splattered out when time restarted.

When she came to his office for their third session, he could stop time for 18 seconds. He dropped something on the floor, and they both moved to pick it up. She knelt, but he stayed standing, so that when he got close, he was able to pause time and unbutton his pants and slap his cock onto her face. He took a few pictures, and then slid it into her warm mouth, taking more pics as he did. He pushed it down her throat, and realized that she had no gag reflex while time was stopped. He didn't have enough time to cum, of course, but he would have that time later, with pictures of her sucking his cock. He took it out and buttoned his pants just in time for her to resume. "Do you see it?" he asked, pretending that nothing had happened.

"...I see... it." she replied, but when he looked down, she wasn't looking at the floor at all. She was looking at his crotch. He looked too. His fly was down, and his erection was straining to be released from his pants. She could see that he was hard.