I don't know if there will be a MV for this.
This song is made of two songs, Because Happiness from Berryz Koubou's latest album, Ai no Album 8, and Shiawase no Tochuu from C-ute's latest album Dai Nana Shou "Utsushikutte Gomen ne".
Tsunku has said that he wrote these two different songs so they could be performed together and was planning to unveil it during the Summer Hello Project Concerts but someone figured it out before hand and so they uploaded the music only videos.
While I hope there will be a MV, I just don't know, this would come pretty quickly after their last joint single Amazuppai Haru ni Sakurasaku.
I'll keep my fingers crossed