Takao and Yuki are CHFs who share a fear of the dark after accidentally being locked in a shed as children
Ch. 1-3: Takao keeps to himself, only talking to his CHF Yuki. When they are put in different classes, Takao's lively classmate Hiroto begins approaching him, slowly opening up his world, much to Yuki's displeasure
Ch. 4-5: After Takao and Hiroto get together, teacher Kanda takes advantage of Yuki's broken heart, using the excuse of comforting him to hold him
Ch. 5.1: Extras
Kono Hoshi de Ichiban Akarui Tokoro