Shuwashuwa, Kirari

1-2. Zigzag Heartbeat (ジグザグ・ハートビート) 3-5. Shuwashuwa, Kirari (しゅわしゅわ、きらり) On the summer vacation of their third year high school, Kei went to visit Koai island to meet his friend, Kou, who he have been exchanging letters with. They reunited for the first time in 12 years, Kou has plenty of friends, a