
More precisely, she is the representation of Poniko's upcoming child, whose fate she is worried about. Madotsuki herself is just a manifestation of Poniko's subconscious that takes over Poniko's dreams when she is asleep. In fact, Poniko is the one who this dream belongs to.

However, turns out that this incarnation of the character isn't the one who's dreaming. She is also unknowingly helped by Poniko during this quest, as she cannot see her. She follows the same path as her game version, collecting the effects. She explores her dream world to escape the boredom of the real world. Did you know that Undertale's W.Madotsuki is the first protagonist of the Yume Nikki novel. Many players consider this encounter very memorable. Considered by some the mascot of Yume Nikki, Uboa appears in an RNG event and jumpscares the player, leading to a warped and messed up area. Uboa is the character that Uboachan was titled after. 4chan /jp/ discovered the game soon after, and contributed to various material and content that still lingers in Uboachan to this day, which was also created soon after the game's discovery.

Originally being little known, Yume Nikki gained popularity over time in 2ch, and later gained following outside the Japanese web when an unofficial English translation was made. Since it's a Yume Nikki fansite/imageboard, many of the culture adheres to it and other RPGMaker titles. Uboachan is named after the titular "Uboa" character from Yume Nikki.

In 2018, publisher Playism released the game on Steam, followed by a remake/reimagining by KADOKAWA titled Yume Nikki: Dream Diary Among those, are 'fangames', which try to mimic Yume Nikki's concept of exploring dream worlds and putting a spin on it. Yume Nikki is regarded as one of the most original and groundbreaking entries done on RPG Maker, and spawned a new genre of games denominated "walking simulators". The game otherwise has no explicit plot, and is open to interpretation and head canons. The goal of the game is to explore Madotsuki's dreamscape and collect 24 'Effects'. Released in June 26, 2004, and last updated in October 6, 2007, Yume Nikki stars Madotsuki, a hikikomori who explores surreal locations and encounters bizarre creatures and imagery through her dream world. Dream Diary) is a walking simulator made in RPG Maker 2003 by Japanese developer KIKIYAMA-HP.
