Overview
Dream Graffiti/Yume Graffiti (ユメ-グラフィティ) is a Yume Nikki fangame produced by Oudn.
As of now, it's currently in version 0.02. The game features a girl named Yomika , who lives in a treehouse.
She is presumably a hikikomori, as she cannot leave from her room (From the front door, anyway). There's also a ladder down to the ground, that leads to a sealed off area around Yomika with crystals on the rocks.

Gameplay
In Yomika's room there is a bookshelf with only two books, one being blue and the other, green.
The blue book gives access to a sound test, and as you progress through the game, you can unlock more music on the sound test screen.
The green book brings up the save menu.

Plot
Considering her living conditions, this game most likely takes place at an earlier point in time as opposed to the modern rooms of the other fangames. Yomika herself seems to be in a sort of leaf skirt.
The game's motif appears to be mainly nature based, with most of the effects being traditional Japanese demons/outfits/creatures.
Yomika seems to be by herself in her area, possibly because she lives in a forest isolating her from the rest of the world,she can not leave due to forest overgrowth, or it is too dangerous.

Effects
Dream Graffiti currently has 15 effects.
There is an effect guide in this youtube playlist if you need help on where to find effects.

Kingfisher - This effect turns Yomika into a Kingfisher bird, doubling her movement speed. Pressing shift makes her flap her wings.

Lantern- Yomika carries around an orange lantern. Pressing SHIFT makes Yomika raise the lantern and it glows for a second before turning on. Pressing SHIFT again will turn it off.

Erhu- Yomika carries around an Erhu (southern Fiddle). Pressing SHIFT will cause two music notes to pop up, and Yomika will play a few notes on her Eruhu.

Dragon- Yomika carries a cyan orb found in the dragon's belly. Pressing SHIFT makes Yomika raise the orb and her eye glows cyan while the orb glows, and it starts to rain, or you can make it stop raining by pressing SHIFT again.

Kuroko- Yomika dresses as a traditional Japanese stagehand. Pressing SHIFT makes Yomika lift the black cloth in front of her face.

Long Hair- The game's weapon effect. It makes Yomika's hair extremely long, and interacting with NPCs causes it to lash out and stab the NPC.

Kuroko- Yomika dawns a black outfit that is worn by stagehands in traditional Japanese theater. Pressing SHIFT makes her pull the mask off her face for a brief moment.

Sand- Yomika is made of sand now. Pressing SHIFT makes her sink until there's only her head left, halving her movement speed.

Bug- Yomika is now more bug-like. Pressing SHIFT makes her turn into a bug, which can pass through small passages.

Kitsune/Fox- Yomika's now as white as the snow, along with fox ears. Pressing SHIFT makes it snow or stop snowing.

Sea Turtle- This effect Yomika into a Turtle, halving her movement speed. Pressing SHIFT will make her head pop.

Monster- Some sort of infection wraps around Yomika's head, and a large eye rests on her hair. Pressing SHIFT makes the eye stretch out a bit and wiggle from side to side. As a side note, Yomika's arms raise slightly while the eye wiggles.

Mask- The game's equivalent to the Triangle kerchief. Pressing SHIFT makes Yomika invisible to the chasers.

Tengu- This makes Yomika turn into a Tengu (a yokai). Pressing SHIFT will either make her float or walk.

Halo- Yomika wears a mulicolored colored halo on her back, and she becomes a whitish color. Every step you take changes the color of the halo parts. Pressing SHIFT makes her raise her arms and she strums the halo on her back, which plays a few notes and bounces a bit.

Eye- This effect reveals Yomika's other eye. Pressing SHIFT makes her open the eye and returns her to the Nexus