A two-episode series where each episode is basically a small story (well, it isn't all that rich with plot but anyway) to satisfy your underage loli needs. The first episode is a teacher tricking a gardener girl into sucking his penis with a hand puppet, the second is the doctor + a loli (that's way into yuri) tricking another loli into having sex with them in the name of getting urine samples. Both episodes have girls around 9-10 years old (they have all started developing breasts), with the second one being clearly superior to the first due to yuri factor. I'm giving it a 6/10
because honestly there wasn't anything that made me go "wow". If you're that much into loli hentais I suggest "Garden the animation" instead. The first episode will more than cover for you. That said Choisuji is fun on its own and at least the second episode will definitely be worth your time.
Before I close this: Regarding the first episode's muppet... HOLY £$%^ WHAT IS THAT THING? It starts out as an obvious muppet but as it goes on that thing starts extending a tongue that bends in ways no human fingers could ever bend + it keeps lengthening (and no, he wasn't wearing it on his d$%"). My only guess is that midways during the sex the muppet became possessed by satan and got a will of its own.
Graphics: Not too shabby.
Audio: Convincing 9-10 year olds. Still preferred the immouto from Garden the Animation though.
Characters: Stupid 9-10 year olds getting tricked by their teachers and yuri classmates. Not too much character depth here.
Story: It has a story?
Overall: Enjoyable yuri on the second episode. For the first episode though someone should call an exorcist.