Originally written on Tumblr, crossposting it here
Kento Nanami's a renowned private investigator in Japan, who's known to deal with cases that deal with paranormal activity or what's known to him as "cursed energy." When Ijichi, the assistant manager of his PI firm gets a call to look into another case, Kento recognizes that this case was earlier declared an open-and-shut case by (F/N) (L/N), another renowned PI who was known to have solved cases within days of receiving them. Initially irked with her methods of solving the cases, especially since she's not like him, he decides that he has to approach her for help, else this will remain a cold case yet to be solved. As time passes by, secrets slowly unravel, the distance between them decreases, and the outcome would come out as a surprise to them.