Ichiban Hajimete no Koibito which's 1 of 10 new songs in the special disc of Ken Hirai Singles Best Collection Utabaka 2 has a new promo tie in
The song will be used in the ads of Choya's Choya Natsuume & they will start airing tomorrow
Ichiban Hajimete no Koibito was written , composed & arranged by Makihara Noriyuki
http://www.sonymusic.co.jp/artist/KenHirai/info/481927
http://www.choya.co.jp/products/natsuume_special/