You're looking for not commercially-popular series, right? As far as manga, I highly recommend both The Embalmer by Mitsukazu Mihara and Demon Flowers by Hakase Mizuki. Demon Flowers has 5 volumes, and The Embalmer has five and is still on-going. Demon Flowers is about this demon who falls in love with this half-angel even though he was supposed to kill him, and they live in hiding together until the demon's dad comes after him. (someone can correct me if my summary is wrong, it's been a while since I read it) The Embalmer is, as you can guess, a story about the life of an embalmer.
