I’ve tried to find Japanese horror games from the PS2 era that has this same feel, but I can’t :(
Some quick facts:
The VAs for Siren were British, so every Japanese person had a posh accent and didn’t pronounce Japanese words so well
Siren 2’s main setting, Yamijima Island, was inspired by an actual Japanese Island, Hashima island. The Island was an industrial hub for coal mining and was known for forced labor involving Korean and Chinese slaves.
Both games used facial scans from multiple angles to create the uncanny, and horrifying, expressions of the various protagonists and enemies


All the games are pretty good, but do get gimmicky after the 3rd one. The storylines, and story telling are pretty solid (!), each game builds on the camera based combat and uses, but the plots do get out there. The overall themes of abuse (mostly of women and children), loneliness, filial responsibility over self preservation (and the rejection of it), helplessness, and star-crossed relationships are pretty consistent. Depressing and fun.