Spoilers!! For TSR and Arches too
I played The Smoke Room and Arches first before this. I just finished Leo's Route. My god I bawled when when the TSR characters were getting named dropped, and I freaked out when the Arches protags were referenced. The amount of visceral panic I had when Brian showed up shook me to my soul. Honestly, this is one of the most horrific visual novels I have read thus far, and I mean that in the best way possible. The tension, the build up, kept me hooked on every word. I look forward to playing through the other routes.