Just finished the secret ending. It was a blast although pretty hard. I kinda hope i didn't accidentally skip a part of the route but i think thats the intended way to complete it. Has me really excited for whatever you do next even if unrelated.
PD: I had seen the "fanart" folder but i wasn't sure if i was on the right track so thanks for that. Still gotta find the secret bad ending but ill leave that for later, already spent many hours on this.