The official website for Itsudatte Bokura no Koi wa 10 cm Datta. TV special has released a new preview and announced additional cast members. The anime special will broadcast on Saturdays at 12:00 a.m. for six weeks, starting on November 25 via on Tokyo MX, BS11, Gunma TV, Tochigi TV and other channels.
Saku Akechi: Hikaru Midorikawa (Juuni Taisen)
Chiaki Serizawa: Ryouhei Kimura (Katsugeki/Touken Ranbu)
Haruki Serizawa (young): Koinu (a.k.a Riinu)
Midori Hamanaka: Gero (Starmyu opening theme song performer)
In addition, the website also revealed more songs to feature in the TV special. "Hitsuyou Fukaketsu" by LIP×LIP (opening performer), "Kikoemasuka" by the young Haruki (CV: Koinu), and "Koi to Iu Okurimono" by Amatsuki will be the inserted songs while "Re:Hatsukoi no Ehon feat. Miou Aida" by Miou Aida (CV: Aki Toyosaki) will be the ending theme song to sixth and final episode of the TV special. LIP×LIP's inserted song will be included in the opening theme song CD, and rest of the three songs will be included in the ending theme song CD. Both CDs will be released on December 6.
Note: The video is region-locked; click here for an alternative link.