きたない君がいちばんかわいい 2

[DeepL Translation - needs review] Volume 1 Introduction: Airi Sezaki and Hinako Hanamura. The girls are from different groups and castes in their classes, but they have a secret they can't tell anyone. The girls have a secret that they can't tell anyone: an after-school affair in the chemistry lab that makes them want to cover their eyes. It is a private ritual for the two of them, full of love, selfishness, and sexuality...

(Translator: DeepL)