Ha, this is pretty funny -- even if you do not understand Japanese. Released earlier this year, this is the Japanese language version of the "Red vs Blue: Remember to Not Forget" clip that was supposed help you to remember to... not forget Halo 4's release date.
Rooster Teeth started its popular Halo-based machinima comedy series Red vs Blue all the way back in 2003. Elijah Wood stars in the next season.
So sing it! Halo 4 is November -- er, じゅ〜う いちがつ〜 よ〜ぅか〜 へ〜いろ〜 ふぉ〜
「Red vs. Blue -- Remember To Not Forget」 日本語吹き替え版公開 [YouTube -- Thanks KingofAwesometonia!]