Meikon no Chigiri

In order to mourn those who died without a partner, "Meikon Ema" is a votive tablet on which a marriage with a fictional character is drawn and dedicated. Shoichi Konuma is transferred to a rural town where such a custom still remains, but his daily life is corroded by the supernatural after he meets a creepy girl. In the midst of fear and confusion, he turns to the head priest, who shows him the image of "himself" drawn on the votive tablet... [MangaDex]