In terms of romance, Hijikata is definitely under the slow development category.
For the first half of the game, he sort of just treats you as one of his responsibilities.
Per the usual with otome dating sims, your decisions affect what route you take.
While Souji has more of the teasing personality, Saito is more of the quiet, gentle type.
I personally wasn’t well-acquainted with the history, and that didn’t detract from my enjoyment of the game.
The vampire twist comes from an elixir that was developed to give humans superior fighting abilities, which comes with a change to appearance that makes the user’s hair turn white and eyes turn red.
General gameplay tips for those who don’t want to know anything about the game: Toshizo Hijikata: Voice actor: Shinichiro Miki (known from…everything?
Kojiro from Pokemon, Lockon Stratos from Gundam 00, and Roy Mustang from Full Metal Alchemist, just to list a few) Gameplay goals: High affection, low corruption Hijikata is the vice commander of the Shinsengumi and thus spends most of his time ordering his friends around.