__Height:__ 157 cm     

Tsukasa is a second-year student and one of Sayuri&#039;s closest friends who hangs out with her and Mina constantly. Being a fate-believer, she ran into Riku one day and started their relationship on the spot, careless to Riku&#039;s decision and feelings. Much like Sayuri, she also has several of male admirers at the school who like to cheer for her when she is playing volleyball.

Aoba Riku has just transferred to a new high school because of his father's job, and things aren't quite what he expected. The headmaster's secretary controls the school while espousing the virtues of academic freedom, the teachers are even stranger than normal teachers, and half the student body is walking around with animal ears on. On his very first day, Riku is unfortunate enough to find himself at the center of the student council's latest event, which has him running for his life. All this on top of the normal high school rigour of popularity contests, crushes, and homework makes it unsure whether Riku will be able to survive this new school. 
(Source: Anime News Network)

In December 2007, she changed her name from Yukako Yoshikawa (吉川 友佳子) to Anri Shiono.

The anime main line story revolves around a second year high school student, Riku Aoba, who has just recently transferred to the holy cross high school, where he notices, upon joining, several unique and funny occurrences, often being the target of a series of events and races administered by the student council and its fun-seeking president. 
While at the academy, Riku meets the original Tokimeki Memorial Online characters and the story begins. 
(Source: Wikipedia)

A special episode included with the DVD release, set between episodes 17 and 18.

Tsukasa Kasuga