N0va Desktop

N0va Desktop (formerly known as Lumi / Yoyo) is a Windows application that allows users to alter their desktop background with miHoYo's wallpapers. The application is also available for Android devices, but the mobile version does not feature animated Houkai Gakuen 2 wallpapers.

Features

Comes with pre-installed "Lumi and the swing" wallpapers + background color alter.
Practice room
Featured wallpapers from other miHoYo products: Houkai Gakuen 2, Honkai Impact 3rd, Genshin Impact and Tears of Themis (Houkai Gakuen 2 live wallpapers are not available on mobile)
Account login (miHoYo Pass for CN and HoYoverse for GLB)
Resolution is up to 2K for live wallpapers and up to 4K for static wallpapers (unknown resolution used for mobile platform)
Transparent taskbar (Desktop version 2.0 and above)

Houkai Gakuen 2 available wallpapers

Desktop static

Static wallpapers can be downloaded at highest resolution right in this place, without having to download N0va Desktop. Some wallpapers having even higher resolution and quality than N0va Desktop can provide.

Most images are in lossless format (usually WebP), some are lossy (JPGs) but that's miHoYo's fault.

To download original quality images, tap at the image, tap at "More details" button and then tap at the "Original file" to get the original file. Do not right click and save at this page, it will produce a worse copy of these images.