The story is updated from the late 90s to the late 2010s, with modern technology altering how the characters interact.
If you are interested in exploring this dark world, I can help you find out more about: The between the two main routes. An explanation of the "Mystic Eyes of Death Perception." Where to buy the English physical or digital version . tsukihime remastered
The Rebirth of a Legend: Why Tsukihime Remastered Reclaims the Visual Novel Throne The story is updated from the late 90s