Rina Yaegashi

is the younger sister of Taichi and the two are shown to be quite close. She typically holds the responsibility of waking her brother up in the morning and is very interested in Taichi's love life. Ironically, despite her age, she will often give her older brother relationship advice. At the start of the series, Rina is in the 5th grade.

Personality
Wise beyond her years, Rina is shown to be very fascinated with and knowledgeable about relationships and love. She is shown to be a caring younger sister, diligently waking Taichi in the morning and expressing concern when he is feeling down.

Appearance
Rina is a young girl of average height for someone of her age. She has long, brown hair and brown eyes. Her bangs are split in a fashion that resembles her brother's.

Family

 * Yaegashi Taichi: Rina’s older brother. The two share a very close relationship and are shown to care a lot about each other's personal lives. Taichi is sometimes worried why his sister seems to know more about love than he does. During the Nise Random arc, Rina informs her brother that she has a boyfriend who is a 3rd year in highschool and a horrified Taichi demands she break up with him. Whether or not she was telling the truth is debatable.

Others

 * Fujishima Maiko: During the events of Yume Random, Taichi saw a dream where Fujishima wants to do "inappropriate" things to Rina which drove Taichi to kick Fujishima out of his house.
 * Inaba Himeko: In the side story that came with Asu Random pt1, Rina claimed that Inaba is a rival who might take away Taichi from Rina.

Trivia

 * Rina was the first family member of the  Cultural Club to be possessed.