Nazo no Eureka

Overview

Which one is the true masochist?? A perverted girl comedy about two high school girls!! Shizuka Muraizumi and Junrei Maihama, first-year high school students, are girls who look like each other. However, Shizuka, who aspires to be a novelist, and Junrei, who dreams of becoming a manga artist, are true masochists who fantasize about the other person as their ideal queen. Because of this, even though they seem to be in love with each other, they rebel against each other at important points. In order to be able to accept and interact with each other, the two decide to conduct various experiments, but they escalate in an outrageous direction...!? (Source: Bunkasha, translated)

Source: AniList