Let's explain what pacokatsu would mean. If bukatsu means after school club activities, and konkatsu means activities related to finding someone to marry, then pacokatsu is "any activity related to finding someone to fuck." The sound pako pako represents two bodies slapping against each other during sex.
The chapter list is:
1. Maid Club! After School Body Slapping Story (full color section) 2. Let's Do Pacokatsu in this Wide World! 3. Mamoru-kun is going to Fertilize Her Egg! 1 (tanned gal Onee vs lucky Shota-kun) 4. Mamoru-kun is going to Fertilize Her Egg! 2 5. Mamoru-kun is going to Fertilize Her Egg! 3 6. Mamoru-kun is going to Fertilize Her Egg! 4 7. I Bought a Middle Aged Man with a Giant Cock at the Store Today, Let's Try Him Out 8. I'm Totally Hooked on Sex! 9.