These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Harsher in Hindsight: In 2013 a body belonging to a woman named Elisa Lam was found in a water tank in a Los Angeles hotel. The body had been left to decompose for as long as 19 days while unknowing guests drank, bathed, and brushed their teeth with the tainted water. Despite being ruled an accident, many unsettling theories sprang up when one of the surveillance videos taken of the woman's last moments had her acting strange and anxious in a malfunctioning elevator, as if being followed by someone or even something (although now it's known it's because she had a mental illness). Despite the event occurring many years after the releases of the original and American remake, the disturbing amount of similarities make it seem like it wasn't at all a coincidence.
Moral Event Horizon: Veeck crosses this in the remake. He knew about Natasha's decomposing body in the water tank, but decided to leave it there because, in his words "It wasn't his job".
Nausea Fuel: The water in the apartment is known to be dirty by the residents - Yoshimi even finds a hair in her glass of water early on. The reason for this? There's a decomposing corpse in the water tank.
Took a Level in Kindness: Kyle in the remake. In comparison to Kunio in the original, Kyle, while still a Jerk Ass, gradually changes and seems more concerned for his daughter's safety, than how Kunio was in the original by making Yoshimi's life miserable.
The Woobie: Yoshimi and Dahlia. Ikuko also becomes one.