Serika Furuwada

Serika Furuwada (古和田セリカ) is Asunaro's classmate and one of the participants of the titular Harem Royale.

Appearance
Serika has long, purple hair that goes down her back, as well as a ponytail to the side and thin sections of hair over the front of her shoulders. She wears the beige school uniform blazer and light brown skirt, as well as a pair of black tights.

Personality
Calm when answering questions in class. Serika shows no fear only a resolve to kill the demon Zepafur in their first meeting. Regaining her calmness, Serika logically reasons a way out of scenarios.

Minamatai Asunaro
She is a part of his imaginary harem and is considered classy, talented and beautiful by him. She expresses concern for Minamatai when she believes that he exchanged his life to have a harem of girls dote on him.

Zepafur
Serika is the first chosen by this demon to take part in a game to join Minamatai's harem. She calls Zepafur out for dragging unrelated girls into her game just because Zepafur is grateful for being freed.

Role in the Story
Standing up in class, Serika answers the problem on the board and is praised for answering a college entrance exam question.

Serika in the first in Zepafur's mind and is taken to a realm where she witnesses doll copies of herself being executed in a range of traps, her fate if she does not take part in the game.

She considers the rules of the game and considers she could stop it by informing Minamatai.

Considering her odds compared to other girls, Serika thinks the way to survive is not to win the game, rather it is to work together where they may be able to break the game.

Trivia

 * Serika is likely a reference to Rika Furude from Higurashi no Naku Koro ni. The first kanji in her last name is the same kanji in Rika's last name. She also has a similar blue hairstyle.