Kaeri Yume (帰り夢)

Overview
Kaeri Yume (帰り夢, Return (home) Dream) is a Japanese Yume Nikki Fangame developed by Sute Inu A in RPG Maker VX Ace.

Gameplay
Kaeri Yume is a traditional fangame. The cellphone on the seat is used to save. You enter the dream world by sleeping on the seat left of the cellphone.

Leaving the bus in the dream world leads to the Nexus, consisting of sign poles connected to other worlds. You can explore these various worlds and collect effects. Pressing Q causes your character to wake up.

Plot
The game's protagonist is H2O, a girl traveling alone in a bus. H2O's name (the elemental composition of water) is possibly related to the permanent rain in her dreams.