Poniko’s room becomes nightmarish, like Mado’s dreams. It’s made clearer by the fact that, once Poniko transforms, the room becomes inescapable.
Consider that Poniko transforms when the lights are off and eyes suddenly appear all over the room (rug, poster, window, wardrobe), similar to the way that things change when Madotsuki goes to sleep. Since this is the only other time we see a girl trapped in a seemingly normal bedroom, I believe Poniko to be a mirror of Madotsuki in a more direct sense than Monoko or Masada. It definitely ties into the theme of isolation/suicide that I mentioned in my earlier post, but there are other significant elements here. >1990 Uboa/Poniko is a fairly complicated part of the game. The practice is so common that when a suicide victim does not remove their shoes, some people become su Post too long. In Japan, people remove their shoes before committing suicide. She isn’t wearing shoes, but seems to be wearing socks. There’s a key detail here that again ties in to Japanese culture-her feet. When Madotsuki interacts with her after using stoplight, the infamous image of Monoko’s body, distorted and seeming to have extra limbs, fills the screen. Monoko stands alone in a tunnel in the Monochrome Desert, pacing around until she is hit with the stop light. What do all of these characters have in common with Madotsuki? Their isolation (look at where they're located!). Some side characters are also symbolic of depression and suicide: Masada (the pale guy in the space ship), Monoko (deformed girl in the tunnel), and that girl who turns into Uboa. Since the ghosts in the game’s forest can serve as markers, they once again tie in to the theory that the forest world is Japan’s Sea of Trees. Ghosts are also said to lead depressives back out of the forest to try and make them change their minds about suicide. In the Sea of Trees, people who are unsure about whether or not to go through with their suicide will leave markers behind them, such as bright strips of tape, so that they can find their way out if they need. But more than that, they loudly reinforce Madotsuki’s suicidal thoughts, if we follow the theory that the forest world represents Japan’s Sea of Trees. These would tie in to the odd ghost totems that follow you around once you activate them. The Japanese forest is supposedly haunted by the ghosts of other suicide victims, first of all ( ).
Aside from the fact that the game ends in a suicide and everything in the game could therefore be interpreted as symbols of this fate, there are a bunch of parallels to the “Sea of Trees” suicide forest in Japan and the forest dream world that are very striking. I think this forest sections symbolize the suicide forest of Japan, and I have several reasons. There are tons of things supporting this suicide theme in the game.