@jsyk I've been musing... in Japanese manga it's not uncommon to see Shinto stuff weaved in as a distinct cultural element that modern audiences vibe with. But in Korea, I mean yes there is Buddhism and shamanism and you do see shamanism and a bit of reference to Buddhism in stories, but Confucianism was dominant and suppressive to local beliefs from Joeseon era. Shamanism was only recognised as a national asset in the modern era and is generally practiced my older people with different local flavours so I think it's harder to dig deep with modern pride. That and Christianity and Buddhism are practiced most over shamism in modern Korea today - both are not strictly Korean mythologies.
TLDR: when manhwa writers reach into the creative mythology toolbox for inspiration a modern gate scenario is an more appealing grab, so expect more of it.
TLDR: when manhwa writers reach into the creative mythology toolbox for inspiration a modern gate scenario is an more appealing grab, so expect more of it.