Font doesn't show up

[NikoPalad67140]

Hey guys!
I have a problem for making a screenpack: I'm following Old Gamer's Ikemen GO screenpack tutorial, and I'm stuck at the font for the menu screen. You see, I want to recreate HLoader's SFZ3 screenpack, but when I change the font in the System.def file, it doesn't show up, even with the right settings.