Writing porn is imho, a low bar to clear. So it is frustrating for me to see the common JP technique of "❤❤❤", "iya iya iya", "ah ah ah❤".
Filling the text wall with this kind of dialogue is shit, I am not reading a well drawn doujinshi and even if I can hear it, it is still shit.
Describe how the tentacles are wrapping around the clit and stroking it like a throbbing dick, not the copy paste text spam.