The audio drama's title is "Mikan and Yami's Great Festival Plan". You know who you are - and you know you want it. Scanless, but Yamiful.
To LoveRu the show has ended, but it shall live on in the Variety CDs for a little longer. Especially if you consider each one of these has a full extra episode packed onto them. Fan favorite Yami-chan takes the cover this month (this alone should generate a couple hits), along with a second song for Lala and a song for
Celonius28: Fanservice for your ears.