Bubblegum's Creature Study

What if Bubblegum decided to make a study on many creatures of Ooo and hires many people to help her with the studies and many of them happen to not only go into details of said creatures lives... but their mating habits as well... look inside to find out more on BCS. (Lemon filled from start to finish.) (Ash Death in first chapter) (Male OC's will be used with female humanoids.)