I am sorry if I am a bother but I just wanted to know how it even works to upload one's original work. Like, something that is not needed to be translated and such. What is the process?

Curious about this too

You can put in an upload request with the description that it's an original work by you and any other information you may have (such as if you have a pixiv or something). Alternatively you may contact one of us (DpF, OrangePekoe, or me) on discord instead about it.