Yandere Imari-kun ni Kuromajutsu Kakeraremashita

Rintaro puts up with his childhood friend Imari and her weird Occult Club activities. A strange magic circle is drawn in the science lab after school... What is today's experiment, black magic? All of a sudden, what was there has disappeared, and what was flat has become perky...? This is the start of an occult love comedy with a little bit of XX and a reversal of genders! (Source: Love Josssie, translated)