Elleci

I was reading a BL manhwa where the top was the usual chaebol, but possessed by a demon passed down through generations (or anyway some otherworldly energy) that was draining his energy. He was impotent because of this, and every year he goes to a shrine (where other rich people also went looking for 'relaxation' — amd sex too) to recover his strength.

There he meets the bottom, who turns out to be the person designated to give him energy (I think he was named 'water') and who works there to pay off a debt. The top recognizes him through the blue aura the bottom gives off (and a certain water scent), immediately recovers upon contact with him (things start working down there again too), and ends up locking him away in the shrine's mansion and forcing him to stay with him. He treats him well and badly at the same time. Obviously they have sex.

The bottom tries to escape multiple times in different ways, always found again through his blue aura... can you help me with the title? I can't find it anymore among my reads ╥﹏╥

I have started to read it but I don't recall the name. Searching for an Omegaverse manhwa with beautiful art. In the opening scene, an omega tells a cold, powerful alpha in an office that he is pregnant. The alpha refuses to believe it, citing a past vasectomy, prompting the omega to tearfully beg him to get a checkup.