Ruruka Ando is a character in Danganronpa 3: The End of Hope’s Peak High, and her title is the former Ultimate Confectionist. Ruruka is a cunning young woman who is described as having a mean streak despite her cute appearance. She appears rather manipulative and is not above using her friends to achieve her goals. She can also be extremely selfish, as during the Final Killing Game, she focuses only on keeping herself alive. While she can appear easily annoyed and even mean towards others, Ruruka acts very sweet and intimate with her romantic partner Sonosuke, and she often feeds him her candy. Ruruka has a strong hatred and fear of being betrayed, and she would rather betray others before they have any chance to do the same to her, including her boyfriend. She knows it's wrong, but her fear of betrayal is too strong, and she is implied to have a fear of trust which is called pistanthrophobia. Ruruka's childhood friend, Seiko, "backstabbing" her in high school might have made this worse, but this doesn't appear to be the cause of it. She appeared to have some sort of trust issues much earlier as well, as she strongly disliked it when her close ones wouldn't eat her treats and took it very personally. She has stated that she won't trust anyone who doesn't eat her candy.

As the Ultimate Confectioner, Ruruka's able to make her sweets extremely addictive to eat if digestive - she's even developed her own special kind of candy that can be used to brainwash and manipulate people; thanks to this, Ruruka is a resourceful and skilled negotiator. 

Voices for Reference (ENG): https://www.youtube.com/watch?v=N0pC-W38EVI