this is 84-year-old matsubara massamy and his wife.as mild dimension, but he feels their symptoms got worse when they stayed indoors during the state of emergency. >> translator: he's getting carefully forgetful. it's not good. >> reporter: he had been going to day care twice a week to slow the progress of his dementia. the daycare facility has reopened, but fear of catching the virus is keeping them away. tammiko asked his doctor whether it was safe to send him back to day care. the doctor said they should make their own decision. >> translator: i'm still fretting about what to do. it's so difficult. i guess no one knows. >> reporter: koyama has spent years helping elderly people who live in this complex. >> reporter: every light he checks the lights in the windows to make sure the residents are safe and sound. >> translator: i hope everyone's doing well. i wouldn't be surprised if someone died alone tonight. the coronavirus is doing so much damage to people's healtlth. some peoplple are depressed. some have become less mobile. it's b