Airi Matsui

Story

 * Takumi and Airi break up pre-story but remain friends.
 * Airi meets Toshiro at the beach house.
 * Renjiro dies in a car accident. Takumi comes to the hospital to be with Airi.

Trivia

 * Airi is a feminine name from the Japanese ai, meaning "love, affection" and ri, eaning "jasmine" or "pear".