searching for this yaoi manga

im searching this manga where the people in it have these insects traits so our mc is this uhh super rare butterfly and his pheromones are crazy and sends people into erotica mode so our ml is a spider dude and hes ig feared, ml kinda got mc caught in his cobweb somehow so ml focked him i think? bc of his pheromones uhm.... i think mc has black hair and uhm ml has brown hair(?)

and the genre is that this is all happening inside a school I read this a few years back so thank you to whoever helps me find it