My Little Sister Can't Be This Cute

Kirino Kousaka

高坂桐乃

Kirino Kōsaka (高坂 桐乃, Kōsaka Kirino) is the main heroine of the series. Kirino is Kyousuke's younger sister and the youngest of the two siblings of the Kousaka family. She is an overachiever who seemingly lives a perfect life and is idolized by almost everybody. However, she keeps a big secret from her family — she is an avid otaku and a fan of adult-rated games, especially those involving brother-sister dynamics.

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Kyousuke Kousaka

高坂京介

He has a distant relationship with his sister Kirino, who always treats him rudely. Feeling that this will never change, he adapts to her attitude by changing how he thinks of his sister, treating her like an acquaintance.

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Ruri Gokou

五更瑠璃

Ruri Gokou (五更 瑠璃, Gokō Ruri), also known as Kuroneko (黒猫, lit. "black cat"), is one of the main characters of the series. She's an avid anime fan and a Chūnibyō who claims to have supernatural powers, inspired by her favorite anime Maschera: Lament of a Fallen Beast. She's very skilled at several things, but she doesn't automatically success in everything she tries, in contrast to Kirino.

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Ayase Aragaki

新垣あやせ

Ayase Aragaki (新垣 あやせ, Aragaki Ayase) is one of the main characters in the series. She is Kirino's best friend, classmate and a model co-worker. She is mostly seen as a polite and sweet girls, but she can become a tsundere with Kyousuke, and even a yandere when Kyousuke or Kirino are involved. She tricked Kanako to take part in a Stardust Witch Meruru cosplay contest, which eventually got Kanako a job as an official cosplayer in Meruru events.

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Saori Makishima

槇島沙織

Saori Makishima (槇島 沙織, Makishima Saori), also known as Saori Bajeena (沙織・バジーナ, Saori Bajīna), is a primary character in the series. She's an avid fan of the otaku culture and comes from a wealthy family, which allows her to expends tons of money into her otaku hobbies and isn't afraid to abuse of her money to please herself and her friends. Her two personalities, Makishima and Bajeena, are always represented for presence or absence of her glasses.

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Manami Tamura

田村麻奈実

Manami Tamura (田村 麻奈実, Tamura Manami) is one of the main characters in the series. She is Kyousuke's childhood best friend and classmate. She is described as a 'plain' and "normal" girl, which contrast to the rest of the girls' personalities. Kyousuke always relays on her when he needs help. Kirino hates her and blames her for multiple things in her life, but despite Kirino's thoughts, Manami meets and becomes friends with the rest of the girls, especially Ayase and Kanako.

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