How Good Was I?

Publisher Marketing:
After high school, lovebirds Yuu and Saki thought they had the rest of
their lives planned out with them heading to the same college, but
unfortunately for Yuu, he flunked his entrance exam! Stuck studying for
mock exams, Yuu forces himself to focus and buckle down, in an attempt
to ignore the touch and whispers of a neglected and antsy Saki who's
starting to lose her cool. She hears that arousal supposedly
helps activate brain activity and with hours of studying not working,
she's going to spend all night stimulating his brain power!