Light Shop

The series follows the story of a group of strangers who are all having a hard time processing a horrible experience from their past. Each of them is going about their normal lives when they are all strangely pulled to a light shop located at the end of a dubious alleyway. A cautious shopkeeper guards the light shop, which may contain the key to the strangers' pasts, present, and futures.
(Source: Wikipedia) ~~ Adapted from the webtoon "Shop of the Lamp" (조명가게) by Kang Full (강풀).