Piko to Chokora

A cute little magical girl appears before Haruki Sakurada (nicknamed Haru), a student preparing for his university entrance exams!? The girl, who calls herself Chocola, claims she will help Haru succeed in his exams, but instead causes all sorts of trouble every month!? In addition to the magical girls (and magical boys!?) that keep appearing, Haru is surrounded by beautiful girls, including his innocent childhood friend and his busty younger sister. Will he be able to pass his exams in this environment? This is the first manga volume by Hizuki Yayo, a notable author of 2008 who also illustrated MF Bunko J's "Limitless!"!