@Zuclyn I just can't understand how Overlord would be a 3/100. I would understand if you thought it was mediocre, and I'll admit the CGI was pretty bad, but I don't think it was bad enough to be a ridiculously low score like 3/100.
Assuming I'm understanding this correctly, it means that the entry is planned to be removed soon, and as such cannot be added to lists.
The second sentence in the one-shot description is "Popularity may result in a serialization!", and both the one-shot and light novel are relatively recent, being published in 2021, so I'd say there's definitely a possibility, especially considering that the light novel is the 5th most popular in 2021.
It's possible that it is still a beta feature, and as such, only donators would have access to it so far, which would explain why wlfy has it, but we don't.
Edit: After being told, I checked, and it appears that the custom scoring feature is NOT a donator feature. Instead, it is only available to those who use decimal or out of 100 scoring.
@gh0stsyndr0me Honestly curious as to what made Elfen Lied a 7/10.