Hyu Seki is usually very sweet and energetic. They're seen most of the time in a cheerful and happy mood and they tends to spread joyfulness to the ones around them. No matter what may happen, they quickly revert to their cheerful self.

As a deredere, as Hyu is, have an acceptance if their love interest rejects them, since this dere type is purely lovey-dovey almost all the time, even though he's kind he's still a stalker and follows you everywhere, also being quite clingy and needy.