On March 17. Saki, Maa and Rii were appointed to “Tochigi Future Ambassadors” by Tochigi prefecture’s Governor Tomikazu Fukuda. At the same event was announced the theme song for the mascot of Tochigi prefecture.
By the way Tochigi prefecture is located north from Tokyo and it is well known for it’s strawberries.
NHK NEWS has news about this event and there is also a video clip.