On April 18th, Rainbow's Jisook wrote a thoughtful letter to her fans to celebrate the beautiful warm weather.

She wrote on her me2day, "A fresh spring letter from Sookie has arrived~".

Although the letter looks like it was typed up on a computer and printed out, she actually handwrote and decorated each of the characters herself. The letter states:

"Hello? It's Rainbow's cutie pie Jisook~ I feel so happy because it's spring now :D~ hehe. How about all of you go outside and enjoy the flowers with your loving family and friends in this beautiful weather? I'm sure your body and heart will warm up like the spring day~ of course, of course~ And be careful of catching colds in between seasons! Thank you so much for your love and support~ hehe :D. Have a fighting day today!"