Sakura Ogawa

Girl #4 Sakura Ogawa is one of the most attractive girls in the class, and Kazuhiko's long-term girlfriend. The novel describes Sakura and Kazuhiko as "the most intimate couple in the class."


She and Kazuhiko meet on the island and decide to kill themselves by jumping off a cliff.

In the novel, Yukie witnesses their deaths, and is very upset.
(Source: Wikipedia)