Tentacles Appeared!

Han-Seo, an ordinary office worker, begins having daily dreams of being raped by tentacles. He seeks psychiatric counseling and even uses expensive amulets, but nothing works. As Han-Seo withers away day by day, a man who claims to know the cause of his dreams finally appears. He then tells Han-Seo a shocking story...
*"W-Wait a minute, I'm a female...! What kind of species are you?!?"*
(Source: Bomtoon, translated)