from Tedama ni Toritai Kurokiya-san
Ruu Kurokiya is a high school gyaru and Tadao's (MC) childhood friend. Back in elementary school she used to always get full points and have the best grades, but now she's on the verge of failing and therefore Tadao helps her study. She often tries to embarrass him by seducing him, but due to his straight-forwardness she's the one that ends up embarrassed.
Tedama ni Toritai Kurokiya-san
Kurokiya Ruu is on the verge of repeating a year so her childhood friend Tadashi Tadao steps up to teach her. However, they end up not getting any studying done as she uses this situation to try and seduce him at every turn.
