This is the drama CD portion of the Ef - Second Fan Mix set. See the DVD-ROM listing for more information about the set.
I could not find track titles anywhere, so I made them up. I'm not familiar with the game, nor the anime, but I do own the drama CDs, so I am not new to the characters. In fact, this drama has similar feel (slightly toasty comedy) to the drama CDs, so I felt at home listening to it. There's nothing particularly important here, but it's entertaining nonetheless.
The only gripe people might have with this drama CD is that Chihiro isn't featured even though almost all of the other characters are.
Also, this is the first time I've seen "Neko Neko Tenshi Yuuna." So, that's what she looks like (See below sticker set image). Heh....