Neoui Pheromone Chwihae!

Ji Seo-Ha could sense pheromones even as a beta. Though he senses the feelings of Lee Yu-Sung, who has been by his side since childhood, he deliberately keeps his distance, worried that his emergence as an Omega might be a burden to him. Some time later, the two meet again at Yu-Sung’s graduation ceremony. That night, while thinking of Seo-Ha, whom he hadn’t seen in a long time, Yu-Sung is caught masturbating by him…

“Hyung… Please help me. I can’t get it down.”

(Source: Bomtoon, translated)