Zeitaku na Mi no Ue Tokimeki no Hanasaku Koukyuu e!

Karen, the daughter of a wealthy merchant, was facing a crisis. Her parents were forcing her to marry. But marriage was out of the question for Karen, who preferred to live for her hobbies rather than for men! So Karen came up with the idea of ​​entering the new emperor's harem. If she could live quietly among the thousands of concubines, she would be able to devote all her time to her hobbies! With this in mind, she successfully infiltrated the harem, but...!?

(Source: Shueisha, translated)