Zenyasai: Viral no Amai Yume ("Viral's Sweet Dream") is a side piece to the main series, focusing primarily on the eponymous character Viral, who continues to have bad dreams. I'll be happy to report that while this segment is very short, it does not let down. A lot of it is devoted to comedy, as well as a meager amount of development toward Viral. A lot of it is really just pure jokes, which is exactly what the episode called for.
Other characters also appear with rather entertaining antics, namely Kamina, who serves as a foil of sorts to Viral. While it might be difficult to find, if you can, I recommend watching this: it's a very good laugh, and at the worst, it's only five minutes long. 6/10.