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 (捨て犬A), creator of Hide&Seek. It stars H2O.

Gameplay
The game's protagonist is H2O, a girl traveling alone in a bus. The cell phone on the seat next to hers is used to save.

H2O enters her 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. Pressing Q causes H2O to wake up.

Plot
The protagonist's name, H2O (the elemental composition of Water), is possibly related to the permanent rain in her dreams. She is stuck on her own in a moving bus, but her destination is unknown.