A trance I made in 2013, prior to L2 and planning of the entire Chapter L. It was originated from the melody of Precipitation, which made it into the synth solo in the second half; but the motif was supposed to hint that there will be a catastrophic event to the world. After 8 years I picked up the idea of making a conclusion to everything happened during the course, and titled it as "Conclusio Catastropha" marking it as a milestone in the timeline.