There Is Light (Kurayami kara te wo nobase) (2013)

Saori (Maya Koizumi) decides to work at Honey Lips for the simple reason that it seems like easy work. The company Honey Lips provides sex to disabled people. On the first day of her new job, the manager (Kanji Tsuda) of Honey Lips drives Saori to a customer's house, located in a peaceful residence area. Her client is 34-year-old Mizutani (Yuki Kan), who suffers from progressive muscular atrophy and has a beautiful tattoo on his whole body.