The new entry in the "Lady Boy Jailer" (that is: a lady who is a jailer of boys, or boy-jailer, not a lady-boy jailer!) series from SOD! I'm pretty sure this series inspired Prestige's famous Ejaculation Officer series to some degree, and since creampies feature so prominently in SDDE-727 I also think that the success of the Ejaculation Officer titles inspired SOD to renew this series. It's not perfect, but it's still amazing. I loved Tachibana Kyouka in this role even though I haven't come across her before. And although the other two girls are not my cup of tea, they do a great job as well.
If you're already a fan of this series due to the earlier installments (SDDE-130, SDDE-148, SDDE-171, SDDE-262 and SDDE-425) or just want something similar to Prestige's Ejaculation Officer titles, give this one a chance!