if you watch the NAVI TV thingy, they preview "Hikari Hitotsu" (Hikari in Katakana, Hitotsu in Hiragana) at the end!
OMFG I CAN'T WAIT FOR THE J-DRAMA. LOOKS GOOOOOOD. Oshinari Shugo!
it's quite up-tempo, but like...dark up-tempo? LOL. idk how to explain it.