Two stories of two separate, young girls: Hazuki, an artist struggling to find recognition or purpose, and Yamazaki, a hacker who inadvertently falls in love with a girl. Their stories are separate, but they are both connected by a single theme: long distance relationships, love via e-mail.
Cell Phone Love Letter was scripted entirely in Ren'Py, as an entry in 2007's NaNoRenO (no, I don't know what it stands for, either). It's a short (2 hours, if you're a slow reader) non-branching visual novel, and my first attempt at such a project. Due to heavy use of free images, samples, and music, Cell Phone Love Letter is available only under a Creative Commons license.