anyone know this one manhwa where the omega uke(purple hair i guess or not) had a crush on...

anyone know this one manhwa where the omega uke(purple hair i guess or not) had a crush on seme who was also his sunbae. the seme hates omegas bc of their pheromones and only sleeps with betas but one day the uke pretends to be a beta and try to sleep with seme with the help of his other alpha friend who was the son of the owner of the hotel. but then it turns out the seme loves the smell of this particular omega. the uke runs away after sleeping and then the seme keep searching for him.