This was a live broadcast for the TV anime Slow Start,
which will be broadcast next year.
The regular seiyuu for the Slow Start broadcasts
were Kondou Reina, Itou Ayasa, Mineuchi Tomomi, and Naganawa Maria.
Ayasa had injured her ankle recently, so she stayed in her seat
the whole time.
The others stood up and moved around for some games during the broadcast.
They announced three additional cast members in this broadcast.
They showed a promo video of the character, then the seiyuu appeared.
The new seiyuu announced were Mao, Numakura Manami, and Uchida Maaya.
Mao and Manami appeared live, but Maaya just had a video message
(of around 2 minutes).
The opening song will be sung by the four main seiyuu,
as the group StarTails.