Why the Hell Are You Here, Teacher?! Vol. 7 (Kodansha, 2020)

My name is Yamato Yamamoto, and my childhood sweetheart Ohka is now the leader of Nata de Coco, a wildly popular idol group. So why the hell is she now a student-teacher at my high school?! She knows she'll be in huge trouble if the students discover her identity, but with her idol outfits and bizarre behavior (plus a taste for wearing aprons and nothing else), she's a scandal waiting to happen! But between sports, studying, and dodging paparazzi, I'll do everything I can to keep her from hating me!