Based on "THE MAN WITHOUT A BODY" By Edward Page Mitchell (March 1877) with a slightly different tone and take from the original. Link to the original story below.
Update: Yes I did based Marin on two actual anime girls who are surprisingly voiced by the same person. Specifically Hina Sugata who voices Marin Kitagawa from My Dress-Up Darling and Touko Kirigaya from Bang Dream.