MIAA-720 I, Nii Rimma, was picked by the top girl in the school hierarchy to be her fuck buddy, and my only redeeming quality is my sex drive.

Everyone has felt the hierarchy among students in school life at least once. Recently, it's called School Caste, and once the superior-inferior relationship is set, it's almost impossible to reverse! As the lowest of the low, I look like a cow with nothing going for me except my sex drive. Even with my looks and sex drive, all I could do was jerk off, but I got picked by Rima-san, the top of the School Caste, to be her fuck buddy! Replacing her boyfriend with a weak sex drive, I instantly transformed into a super stud dildo just for Rima-san! A sudden spring of sex for a gloomy guy!