Mōsō♡Express (もうそう♡えくすぷれす, mousou♡ekusupuresu) is the third opening theme song of Monogatari Series Second Season, played during the Nadeko Medusa story (Episodes 12 and 14 for the TV broadcast and Episodes 10 and 12 for the disc releases). It was written by meg rock, composed and arranged by Satoru Kousaki and performed by Kana Hanazawa, who plays the role of Nadeko Sengoku.