Modify some problems in "Sugar Candy login", and make the theme adapted to Blue Archive (my favorite game)
Fitstly, download the zip file from release page. Then unzip it to the sddm theme directory like this:
sudo cp /Arona /usr/share/sddm/themes/
After that you will have to point SDDM to the new theme by editing its config file, preferrably at /etc/sddm.conf (create if necessary). You can take the default config file of SDDM as a reference which might be found at: /usr/lib/sddm/sddm.conf.d/sddm.conf.
In the [Theme] section simply add the themes name to this line: Current=Arona. If you don't care for SDDM options and you had to create the file from blank just add these two lines and save it!
Or Easily install from sddm settings
(Searching Key words: "Arona")
This repo is built up on the Sugar Candy login