Regardless of the specific distinction between the two, it would be possibly illegal for me, as a UKian, to allow that content[1] - "The Act made it illegal to own any picture depicting under-18s participating in sexual activities, or depictions of sexual activity in the presence of someone under 18 years old."

(I admit that I am not well versed enough in "anime loli" to know whether it is just "sexual activities" or more nuanced but I'm not risking a jail sentence either way, thanks. UKGOV is trigger happy on anything CSAM/fictional CSAM.)

[1] https://en.wikipedia.org/wiki/Legal_status_of_fictional_porn...