Rain recently posted a heartwarming updated on his Twitter, where he revealed he met up with an old mentor of his. He wrote,�"This is my first vocal teacher who I haven't seen in 12 years. The one who taught her students day and night even as she slept on a chair in the small studio..." In the attached photo, Rain is seen wearing a clean-cut navy blazer as he puts his arm around his teacher, Kolleen Park who's seen smiling warmly at the camera. Netizens said, "It's nice to see their warm relationship," "She has left an amazing student," "I wish I could also learn a song from her," and, "Please show us more of you together in the future." Source & Photo: Twitter via Naver