My Best Friend is a Ghost (Original)
Most mods install on top of a fresh copy of DDLC, free from ddlc.moe. Follow the author's instructions, and keep a clean copy of the game.
About this mod
After Sayori, your childhood best friend, tragically loses her life you fall into a deep depression. You stop going to school, eating, all together become a shell of your former self. Until one day when you start hearing voices, finding cooked meals, seeing objects fly around. It all comes to a stop when one faithful night Sayori's ghost comes to you because of some... "unfinished business".
Full credits
Storm Boss, icouldbecooler