Jal Ja Nae Kkum Kkwo (2019)

Blurb:
A long corridor bathed in red … A ghostly figure lurking in the shadows … Dozens of hands, their long, spindly fingers grasping at your throat … Sounds like the stuff of nightmares, right? But it’s not the kind of thing that troubles Seongha. She’s just your average high-school kid with a head full of exam stress. Her classmate Isu, on the other hand, has been plagued by that very dream for years. And it’s taken its toll, leaving her exhausted and alone. So one day, when Seongha finds herself inside Isu’s dream, both girls know that something seriously freaky is going down. Can Seongha save Isu from her nightmares?

Source: www.anisearch.com/manga/72162