Itta ja nai ka" will be the official theme song of TBS's new fall drama "Gomen ne, Seishun" ("Sorry, youth") which will air next October, Sundays.Ryo Nishikido will play the main role of a high school teacher in a Buddhist’s all-boys school.

Because of an unfortunate incident happened 14 years before, the teacher Hara Heisuke (Nishikido Ryo) decided to keep working in his hometown from then on. In the meanwhile, the all boys school where he works has been merged with a girls school of the same area because of a decline in student inscriptions.

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