However, it looks great from the screenshots! It definitely looks well designed and professional. Honestly, I'd struggle to find any feedback on improving this, only that some of the paragraphs may be a bit too chunky... Not sure if they'd look better separated.
Perhaps a fixed header could help. Even if it's a single page site, it could use scrollspy and let users jump to sections of the page. (Apologies if this is already included)
I like the look of it, and love the way you've integrated the images from anime into the sections.
One thing that is annoys me a bit (only a minor detail) is the positioning of some of the icons (mainly in this screenshot) seem random in placement, and just doesn't look right. I feel having the three icons together under the text may be a better combination IMO.
Also, I was lucky enough to have a local resident who was starting up a business approach me (via my father actually, they were acquaintances at the time) about designing a single page website and I got £100 for it. It's unlikely that you'd get an offer like that, but you never know. If you could find a business / youtuber / other who was just starting up: they'd love a cheap website to get them going.