Single of the Touken Danshi team Shinsen Gumi with Hachisuka Kotetsu. Limited edition DVD includes not only the newly shot "Scarlet Lips" music video but also the "Scarlet Lips" making-of footage, which is a mixture of the music video featuring the Touken Danshi on the main cover of each CD and the making of the music video. Pre-order period: January 12, 2021 12:00 - March 15, 2021 23:59 (Japan Time).