Previously, it was reported that Utada Hikaru will be singing the theme song for TBS's drama 'Saiai' to premiere on October 15. At this time, the title of the theme song has been revealed to be "Kimi ni Muchuu." 

'Saiai' is an original suspense love story produced by Arai Junko, directed by Tsukahara Ayuko, and written by Okudera Satoko and Shimizu Yukako. It will star Yoshitaka Yuriko as Sanada Rio, a businesswoman who becomes a witness of a murder case, Matsushita Kohei as Miyazaki Daiki, a detective pursuing the murder case, and Iura Arata as Kase Kenichiro, a lawyer who defends Rio.

You can get a first listen of "Kimi ni Muchuu" on the drama's first episode, which airs tonight at 10:00 pm JST.