The music is from MetaWare High School (by Not Fun Games): https://www.youtube.com/watch?v=WJdORk3Qltc

DDLC stuff is by Team Salvato (except for MC art, which is by Childish-N and u/SlightlySimple

Most of these images were made with Doki Doki Dialog Generator: https://edave64.github.io/Doki-Doki-Dialog-Generator/release/

(also, the altered DDLC menu is from my Natsuki mod)