A group of five slightly introverted and quiet humanities girls, in order to draw erotic manga, study lesbian play! An after-school青春 laid-back club story! Since they have no connection with boys, they use their own bodies, from kissing, caressing, to even bringing out the 'penibahn' for lesbian play!! While making excuses that it's for the manga, their sexual desires run wild in the girls-only space! Unable to resist testing their research results, they bring out a seemingly harmless boy and practice SEX with a raw 'chimppo'!! "We won't tell anyone, so lend us your 'chimppo'!"
