ZONE "secret base ~Kimi Ga Kureta Mono"

The band ZONE sang the song in tears at the end of their final concert at the Nippon Budokan (2005.04.01).
The band reunited for a limited time in the summer of 2011, as the lyrics "I believe we will see each other again in August, 10 years from now".
In 2011, it's cover song was used for the ending theme of the anime "anohana -The Flower We Saw That Day-". Its fan base is still growing even today.