I forgot most of it but MC was spirit tree? also, the Male lead is Nine tail fox, and mc work on the otherworldly office (yes in the beginning he didn't know mystic) and he plant anti-evil flower surrounding his home
Sorry for the late reply. Your front page exclude genres is set up okay. The only other things I could think of is that it is a glitch, the novels you read didn't have the right genres set up or it is gender bender. (Meaning one of the characters was originally female.) Do you remember if this was the novel? https://www.novelupdates.com/series/non-human-sub-district-office/ If you found the novel using the search feature, then you have to exclude the genres on search option. This is done by clicking twice on a genre. A red X will appear.