Kleinchen is the name given to Earth's theorized, but as-of-yet undiscovered, second moon. This is an apt temperament for this world's Doremy since she's a kaiju. Doremy is strong against Moon Essence because she was designed to combat the Capital. However, since she's a Mark 1 kaiju, combat against the rebels wasn't taken into account. She is weak to Sun Essence due to this inability to maintain perfect order. Kaiju and the youkai they evolved from have always been more of chaos than order, resulting in this world's Doremy and Keine, who is also a Mark 1 kaiju, being far more powerful than the professor predicted they would be. Doremy is strong against Fire Phase since dreams possess the essence of death and spirits (water dampens fire).

The ability of Doremy Sweet, the kaiju (a Touhou LW original). This ability is significantly different from our world's Doremy. The word "kaiju," as used by those from this world, apparently refers to beings that have undergone a specific process of artificial evolution conducted by Yuuka Kazami. Letting nature play its course does not always guarantee salvation. Who can blame or look down on someone who, when faced with a harsh reality, does everything in their power to defy it? Having lost Gensokyo and the humans who sustained them with fear, these "kaiju" need somewhere to live and a new source of food. This world's Doremy Sweet was given several abilities and memories by the Kaiju Professor. In fact, the extraction and implantation of abilities and memories were only made possible thanks to the existence of this kaiju Doremy and the kaiju Keine Kamishirasawa. Just as the real world is constructed from chemical elements, the unreal world is constructed from temperament. And just as the light that shines in the real world is made of electrical and magnetic waves, the darkness that permeates the unreal world is made of fantasy and dreams. The kaiju did not always take the forms they do now since the kaiju and Kaiju Theory influenced one another as they developed. Yukari Yakumo's ability to manipulate boundaries is the main ability known to have been given to this world's Doremy Sweet, but it's thought she's also been given several unnamed abilities. Yukari's ability was clearly given to her to aid in the construction of a new Gensokyo. Originally, Doremy Sweet possessed and ruled over an expansive Otherworld found within dreams. Via this Otherworld, it was even deemed possible for her to move the Lunar Capital to Earth. If she truly has been given the ability to manipulate boundaries, then the creation of a new Gensokyo is perhaps not so unrealistic. However, that all depends on whether Doremy has sufficient command over the ability.