Rainbow's Jisook sent a greeting in calligraphy as she is leaving for Japanese activities.

As Rainbow is currently deciding this weekend when to leave for their debut activities in Japan, Jisook showed her sincere thanks and cheerful support for her fans with a calligraphy greeting. Her calligraphy level showed her hard work as her level was good enough to participate in an elementary school competition. Jisook wrote, "I'll do well in Japan and come back, Rainbow fans best ?". Rainbow will debut in Japan on September 14th with their album, 'A'. The group is already receiving hot attention in Japan. Source: Money Today via Naver