Chapters 1-3 have been made into voice comics on DLSite. I can't link to it directly because it's detected as spam, but it should be pretty easy to find by searching for 田所さん on the site. It's a bit of nickel-and-diming situation, though, with each chapter costing 275 yen (220 yen for the comic + 55 yen for the voices). There's a sample on the product page if you just want to know what it sounds like.
Tadakoro is played by Nihei Yukako and Nikaidou by Sanada Akane, pretty minor league but not amateurs or anything. That said, the voice direction isn't really working for me. Tadokoro's is OK, but Nikaidou's doesn't really fit my image of her. It feels like in the scenes where she protects Tadokoro she's going to sound less gallant and more like a burikko revealing her true nature, but we'll have to see.