11-beonjjae Suhagyeohaeng

Ga-Jun and Sun-Woo, students with supernatural abilities, are trapped in a time loop during their school trip. After witnessing their friends’ deaths, Ga-Jun realizes Sun-Woo’s death triggers the loop. He becomes fiercely protective, while Sun-Woo, confused, tries to protect Ga-Jun in return.
(Source: Manta)