If the game contains real vampires and nekogirls i would also go full herp mode and add some mind control, invisibility, mindswap, flying bitches with brooms, magic, etc... But i try to keep at least some realism. So yes, Kotori is just a cosplayer, Nekogirls are just girls with nekomimi. But you will never see Neko without the catears
Also. The next pasttime episode plays where Day 5 pasttime episode ended. The chronological order is not the same order like the pasttime episodes were revealed. But with week 1 you are able to play the pasttime episodes in the absolutely correct order