It’s about 16 year old orphan Sakiko Amamiya and a dying cherry blossom tree that her grandmother left to her to look after. Of course, that includes looking after Shizuya, the spirit that lives within it as well…
(Source: Kokoro no Oasis)

Amamiya Nonoka is a human that can see spirits. Because of the strange ability she posseses, she has no friends at school at all. Suddenly, one day two handsome brothers appear in front of the lonely Nonoka. Aki and Kou, the two of them came to borrow Nonoka's "strange ability"? Not to mention, they are renting parts of their bodies to continue living...

(Source: Starry Heaven)

Hana is a normal teenager who goes to school normally, that is until she gets ran over by a car... or did she? Suddenly she finds herself in a weird place, and finds herself in the Red Light District... in EDO PERIOD?! She just wants to get back to her own time. She gets mistaken for a Prostitute and has to escape. She was not expecting to be saved by a gentleman, but suddenly she ends up in a house for geshias but then ends up being bought by the same guy who helped her earlier?!
(Source: Sweet Indulgent)