White Day (2021)

Both involve groups of people trapped in a building fighting off supernatural monsters.

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(Won’t let me submit unless there are 100 characters so adding this inconsequential footnote).

Similar feels but this one is a bit more interesting than The Labyrinth. The storylines have a lot in common but the plots are slightly different. I think you should really check out this mini series.

the plot also revolves around school, shamanism, exorcism good and bad spirits, demons ... boy and girl somehow ^ especially ^ connected ... similar vibe