Sophie Manaka

Sophie Manaka (真中ソフィー Manaka Sofi) is Nanami's younger sister who loves science and physics, and also known as the friend of Ruru Ayase, and the form of Positive 1-tan.

Appearance
She is identified that her hair is nicer than Nanami.

She has black hair that is shoulder-length, and has blue eyes. She wears pink glasses. She has a cadet blue watch that is given to her sister since she was 3. She wears a turquoise sweater and her pink pants. She wears purple sneakers.

Personality
Unlike Nanami, she is lot smarter and mature. She understands everything about science very much.

Relationship
Ruru Ayase - her companion and best friend. She loves Ruru and she transforms with her. She and Ruru work together very well.

Trivia

 * She resembles Physics-tan due to her hair and look.
 * Her age is now 13-14, while her elder sister Nanami is now 16.