▶ An account by a volunteer, who was emotionally in touch by the way Yoona did her volunteer work covertly in Peru.

I went to a school in Peru to do a volunteer work with friends, a teacher informed me that Yoona used to come here for a volunteer work. However, no matter how much I searched online, I can't find a single information even an infinitesimal information relating to this. I was really staggered and surprised by the way she did everything in secret.