This character is from the otome Wizardess Heart. 

Hugo is a bit of a mysterious character whose ulterior motives are unknown. Hugo watches over the protagonist because she is "The Goddess of Time." Throughout her journey, Hugo helps the protagonist out by giving her riddles and prophecies to help her gain her memory and progress on her adventure. He is also a time-traveler that comes from the future to prevent the end of the world. 

Hugo is very secretive and shares little information on his plans, which is why the protagonist and the others have trouble finding out if he's a friend or foe. This is seen in Alfonse's route when he helps  the protagonist a lot and later betrays her. In season 7 and at the beginning of his route (season 8), he seemed to have no regard towards people's feelings, which distresses the protagonist. He even sometimes denies to be the protagonist's friend stating that he only protects her because it's his mission, also making it clear that there's nothing more important to him than his mission. Later, in his route he opens up a little by spending more time with the protagonist and the other Prefects.

Hugo is actually from the future. He is sent to the current time line in order to change the future and save the world from destruction.

Voice: Mid-high to medium range, calm, possibly mysterious and/or wise. Example #1. One of the members of the casting team suggested Hugo should sound like Dainslief from Genshin Impact, so a voice similar to Dain may also work. Example #2