"Marunouchi Street Park (MSP)" is a social experiment project to examine the future state and utilization of Nakadori in Marunouchi, Tokyo. "MSP 2022 Winter", the seventh event since its launch in 2019, expanded its area from Marunouchi Nakadori to Gyoko-dori in front of Tokyo Station, making it the largest event ever. We participated as a general planning partner and operation manager. The theme of this event is "MSP Twinkle Street". Block 1 in front of Maru Building is based on the theme of "Twinkle Party", and design, layout a Christmas market in collaboration with stores in the Otemachi, Marunouchi, and Yurakucho area, creating a winter festive space filled with heartwarming gimmicks such as merry-go-round benches, light quoits, and hot benches surrounding trees. Block 2 in front of the Marunouchi 2-chome Building was themed "Twinkle Terrace" and featured a popular street piano performance space, a spot to take photos with the illuminations in the background, and a long hot bench, creating a space where visitors could relax while enjoying the winter illuminations. And on Gyoko-dori in front of Tokyo Station, which was the first MSP event to be held, the "Marunouchi Street Rink," an environmentally friendly plastic skating rink, was installed, allowing many visitors of all ages and genders to experience the appeal of skating outdoors, which was well received. (Event period: November 29, 2022 - December 25, 2022)